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Finding the Fourth Proportional to 7,897.80, 10,898.70 and 4,753.38

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Solution

The fourth proportional to 7,897.80, 10,898.70 and 4,753.38 is: 6,559.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897.80 : 10,898.70 = 4,753.38 : x
  2. Step 2: Convert to fraction form
    7,897.80/10,898.70 = 4,753.38/x
  3. Step 3: Cross multiply
    7,897.80x = 10,898.70 × 4,753.38
  4. Step 4: Simplify right side
    7,897.80x = 51,805,662.61
  5. Step 5: Solve for x
    x = 51,805,662.61/7,897.80
  6. Step 6: Final answer
    x = 6,559.51

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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.