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Finding the Fourth Proportional to 7,957.61, 10,981.29 and 4,420.61

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Solution

The fourth proportional to 7,957.61, 10,981.29 and 4,420.61 is: 6,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,957.61 : 10,981.29 = 4,420.61 : x
  2. Step 2: Convert to fraction form
    7,957.61/10,981.29 = 4,420.61/x
  3. Step 3: Cross multiply
    7,957.61x = 10,981.29 × 4,420.61
  4. Step 4: Simplify right side
    7,957.61x = 48,544,000.39
  5. Step 5: Solve for x
    x = 48,544,000.39/7,957.61
  6. Step 6: Final answer
    x = 6,100.32

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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.