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Finding the Fourth Proportional to 7,890.52, 10,888.90 and 4,353.70

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Solution

The fourth proportional to 7,890.52, 10,888.90 and 4,353.70 is: 6,008.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.52 : 10,888.90 = 4,353.70 : x
  2. Step 2: Convert to fraction form
    7,890.52/10,888.90 = 4,353.70/x
  3. Step 3: Cross multiply
    7,890.52x = 10,888.90 × 4,353.70
  4. Step 4: Simplify right side
    7,890.52x = 47,406,982.16
  5. Step 5: Solve for x
    x = 47,406,982.16/7,890.52
  6. Step 6: Final answer
    x = 6,008.09

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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.