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Finding the Fourth Proportional to 4,990.60, 7,502.10 and 4,277.80

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Solution

The fourth proportional to 4,990.60, 7,502.10 and 4,277.80 is: 6,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.60 : 7,502.10 = 4,277.80 : x
  2. Step 2: Convert to fraction form
    4,990.60/7,502.10 = 4,277.80/x
  3. Step 3: Cross multiply
    4,990.60x = 7,502.10 × 4,277.80
  4. Step 4: Simplify right side
    4,990.60x = 32,092,483.38
  5. Step 5: Solve for x
    x = 32,092,483.38/4,990.60
  6. Step 6: Final answer
    x = 6,430.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.