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Finding the Fourth Proportional to 6,153.40, 8,488.74 and 4,472.20

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Solution

The fourth proportional to 6,153.40, 8,488.74 and 4,472.20 is: 6,169.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,153.40 : 8,488.74 = 4,472.20 : x
  2. Step 2: Convert to fraction form
    6,153.40/8,488.74 = 4,472.20/x
  3. Step 3: Cross multiply
    6,153.40x = 8,488.74 × 4,472.20
  4. Step 4: Simplify right side
    6,153.40x = 37,963,343.03
  5. Step 5: Solve for x
    x = 37,963,343.03/6,153.40
  6. Step 6: Final answer
    x = 6,169.49

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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.