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Finding the Fourth Proportional to 2,392.50, 3,590.12 and 931.47

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Solution

The fourth proportional to 2,392.50, 3,590.12 and 931.47 is: 1,397.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.50 : 3,590.12 = 931.47 : x
  2. Step 2: Convert to fraction form
    2,392.50/3,590.12 = 931.47/x
  3. Step 3: Cross multiply
    2,392.50x = 3,590.12 × 931.47
  4. Step 4: Simplify right side
    2,392.50x = 3,344,089.08
  5. Step 5: Solve for x
    x = 3,344,089.08/2,392.50
  6. Step 6: Final answer
    x = 1,397.74

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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.