Home / 9,107.76-12,567.12-5,129.04

Finding the Fourth Proportional to 9,107.76, 12,567.12 and 5,129.04

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Solution

The fourth proportional to 9,107.76, 12,567.12 and 5,129.04 is: 7,077.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.76 : 12,567.12 = 5,129.04 : x
  2. Step 2: Convert to fraction form
    9,107.76/12,567.12 = 5,129.04/x
  3. Step 3: Cross multiply
    9,107.76x = 12,567.12 × 5,129.04
  4. Step 4: Simplify right side
    9,107.76x = 64,457,261.16
  5. Step 5: Solve for x
    x = 64,457,261.16/9,107.76
  6. Step 6: Final answer
    x = 7,077.18

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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.