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Finding the Fourth Proportional to 3,898.47, 5,847.72 and 976.77

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Solution

The fourth proportional to 3,898.47, 5,847.72 and 976.77 is: 1,465.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.47 : 5,847.72 = 976.77 : x
  2. Step 2: Convert to fraction form
    3,898.47/5,847.72 = 976.77/x
  3. Step 3: Cross multiply
    3,898.47x = 5,847.72 × 976.77
  4. Step 4: Simplify right side
    3,898.47x = 5,711,877.46
  5. Step 5: Solve for x
    x = 5,711,877.46/3,898.47
  6. Step 6: Final answer
    x = 1,465.16

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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.