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Finding the Fourth Proportional to 7,287.51, 10,931.27 and 3,124.83

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Solution

The fourth proportional to 7,287.51, 10,931.27 and 3,124.83 is: 4,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.51 : 10,931.27 = 3,124.83 : x
  2. Step 2: Convert to fraction form
    7,287.51/10,931.27 = 3,124.83/x
  3. Step 3: Cross multiply
    7,287.51x = 10,931.27 × 3,124.83
  4. Step 4: Simplify right side
    7,287.51x = 34,158,360.43
  5. Step 5: Solve for x
    x = 34,158,360.43/7,287.51
  6. Step 6: Final answer
    x = 4,687.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.