Home / 3,110.76-4,291.46-1,784.20

Finding the Fourth Proportional to 3,110.76, 4,291.46 and 1,784.20

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Solution

The fourth proportional to 3,110.76, 4,291.46 and 1,784.20 is: 2,461.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.76 : 4,291.46 = 1,784.20 : x
  2. Step 2: Convert to fraction form
    3,110.76/4,291.46 = 1,784.20/x
  3. Step 3: Cross multiply
    3,110.76x = 4,291.46 × 1,784.20
  4. Step 4: Simplify right side
    3,110.76x = 7,656,822.93
  5. Step 5: Solve for x
    x = 7,656,822.93/3,110.76
  6. Step 6: Final answer
    x = 2,461.40

Related Problems

Find fourth proportional to 1,555.38, 2,145.73 and 892.10
Half scale
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Double scale
Find fourth proportional to 3,111.76, 4,292.84 and 1,785.20
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.