Home / 3,117.40-4,300.21-2,055.34

Finding the Fourth Proportional to 3,117.40, 4,300.21 and 2,055.34

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Solution

The fourth proportional to 3,117.40, 4,300.21 and 2,055.34 is: 2,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.40 : 4,300.21 = 2,055.34 : x
  2. Step 2: Convert to fraction form
    3,117.40/4,300.21 = 2,055.34/x
  3. Step 3: Cross multiply
    3,117.40x = 4,300.21 × 2,055.34
  4. Step 4: Simplify right side
    3,117.40x = 8,838,393.62
  5. Step 5: Solve for x
    x = 8,838,393.62/3,117.40
  6. Step 6: Final answer
    x = 2,835.18

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Double scale
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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.