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Finding the Fourth Proportional to 7,484.76, 10,328.78 and 4,127.47

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Solution

The fourth proportional to 7,484.76, 10,328.78 and 4,127.47 is: 5,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,484.76 : 10,328.78 = 4,127.47 : x
  2. Step 2: Convert to fraction form
    7,484.76/10,328.78 = 4,127.47/x
  3. Step 3: Cross multiply
    7,484.76x = 10,328.78 × 4,127.47
  4. Step 4: Simplify right side
    7,484.76x = 42,631,714.08
  5. Step 5: Solve for x
    x = 42,631,714.08/7,484.76
  6. Step 6: Final answer
    x = 5,695.80

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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.