Home / 3,078.05-4,247.40-1,751.69

Finding the Fourth Proportional to 3,078.05, 4,247.40 and 1,751.69

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Solution

The fourth proportional to 3,078.05, 4,247.40 and 1,751.69 is: 2,417.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.05 : 4,247.40 = 1,751.69 : x
  2. Step 2: Convert to fraction form
    3,078.05/4,247.40 = 1,751.69/x
  3. Step 3: Cross multiply
    3,078.05x = 4,247.40 × 1,751.69
  4. Step 4: Simplify right side
    3,078.05x = 7,440,128.11
  5. Step 5: Solve for x
    x = 7,440,128.11/3,078.05
  6. Step 6: Final answer
    x = 2,417.16

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Half scale
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Double scale
Find fourth proportional to 3,079.05, 4,248.78 and 1,752.69
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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.