Home / 8,439.90-11,646.90-4,663.05

Finding the Fourth Proportional to 8,439.90, 11,646.90 and 4,663.05

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Solution

The fourth proportional to 8,439.90, 11,646.90 and 4,663.05 is: 6,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.90 : 11,646.90 = 4,663.05 : x
  2. Step 2: Convert to fraction form
    8,439.90/11,646.90 = 4,663.05/x
  3. Step 3: Cross multiply
    8,439.90x = 11,646.90 × 4,663.05
  4. Step 4: Simplify right side
    8,439.90x = 54,310,077.05
  5. Step 5: Solve for x
    x = 54,310,077.05/8,439.90
  6. Step 6: Final answer
    x = 6,434.92

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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.