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Finding the Fourth Proportional to 6,612.88, 9,128.02 and 4,627.58

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Solution

The fourth proportional to 6,612.88, 9,128.02 and 4,627.58 is: 6,387.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.88 : 9,128.02 = 4,627.58 : x
  2. Step 2: Convert to fraction form
    6,612.88/9,128.02 = 4,627.58/x
  3. Step 3: Cross multiply
    6,612.88x = 9,128.02 × 4,627.58
  4. Step 4: Simplify right side
    6,612.88x = 42,240,642.79
  5. Step 5: Solve for x
    x = 42,240,642.79/6,612.88
  6. Step 6: Final answer
    x = 6,387.63

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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.