Home / 9,123.74-12,589.14-5,145.02

Finding the Fourth Proportional to 9,123.74, 12,589.14 and 5,145.02

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Solution

The fourth proportional to 9,123.74, 12,589.14 and 5,145.02 is: 7,099.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,123.74 : 12,589.14 = 5,145.02 : x
  2. Step 2: Convert to fraction form
    9,123.74/12,589.14 = 5,145.02/x
  3. Step 3: Cross multiply
    9,123.74x = 12,589.14 × 5,145.02
  4. Step 4: Simplify right side
    9,123.74x = 64,771,377.08
  5. Step 5: Solve for x
    x = 64,771,377.08/9,123.74
  6. Step 6: Final answer
    x = 7,099.21

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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.