Home / 9,120.02-12,584.23-5,140.36

Finding the Fourth Proportional to 9,120.02, 12,584.23 and 5,140.36

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Solution

The fourth proportional to 9,120.02, 12,584.23 and 5,140.36 is: 7,092.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.02 : 12,584.23 = 5,140.36 : x
  2. Step 2: Convert to fraction form
    9,120.02/12,584.23 = 5,140.36/x
  3. Step 3: Cross multiply
    9,120.02x = 12,584.23 × 5,140.36
  4. Step 4: Simplify right side
    9,120.02x = 64,687,472.52
  5. Step 5: Solve for x
    x = 64,687,472.52/9,120.02
  6. Step 6: Final answer
    x = 7,092.91

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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.