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Finding the Fourth Proportional to 6,479.48, 8,938.89 and 4,237.45

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Solution

The fourth proportional to 6,479.48, 8,938.89 and 4,237.45 is: 5,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.48 : 8,938.89 = 4,237.45 : x
  2. Step 2: Convert to fraction form
    6,479.48/8,938.89 = 4,237.45/x
  3. Step 3: Cross multiply
    6,479.48x = 8,938.89 × 4,237.45
  4. Step 4: Simplify right side
    6,479.48x = 37,878,077.08
  5. Step 5: Solve for x
    x = 37,878,077.08/6,479.48
  6. Step 6: Final answer
    x = 5,845.85

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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.