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Finding the Fourth Proportional to 3,168.48, 4,752.80 and 977.28

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Solution

The fourth proportional to 3,168.48, 4,752.80 and 977.28 is: 1,465.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.48 : 4,752.80 = 977.28 : x
  2. Step 2: Convert to fraction form
    3,168.48/4,752.80 = 977.28/x
  3. Step 3: Cross multiply
    3,168.48x = 4,752.80 × 977.28
  4. Step 4: Simplify right side
    3,168.48x = 4,644,816.38
  5. Step 5: Solve for x
    x = 4,644,816.38/3,168.48
  6. Step 6: Final answer
    x = 1,465.94

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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.