Home / 9,108.18-12,569.58-5,129.60

Finding the Fourth Proportional to 9,108.18, 12,569.58 and 5,129.60

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Solution

The fourth proportional to 9,108.18, 12,569.58 and 5,129.60 is: 7,079.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.18 : 12,569.58 = 5,129.60 : x
  2. Step 2: Convert to fraction form
    9,108.18/12,569.58 = 5,129.60/x
  3. Step 3: Cross multiply
    9,108.18x = 12,569.58 × 5,129.60
  4. Step 4: Simplify right side
    9,108.18x = 64,476,854.72
  5. Step 5: Solve for x
    x = 64,476,854.72/9,108.18
  6. Step 6: Final answer
    x = 7,079.01

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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.