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Finding the Fourth Proportional to 7,929.56, 10,942 and 4,392.68

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Solution

The fourth proportional to 7,929.56, 10,942 and 4,392.68 is: 6,061.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.56 : 10,942 = 4,392.68 : x
  2. Step 2: Convert to fraction form
    7,929.56/10,942 = 4,392.68/x
  3. Step 3: Cross multiply
    7,929.56x = 10,942 × 4,392.68
  4. Step 4: Simplify right side
    7,929.56x = 48,064,704.56
  5. Step 5: Solve for x
    x = 48,064,704.56/7,929.56
  6. Step 6: Final answer
    x = 6,061.46

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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.