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Finding the Fourth Proportional to 7,159.66, 9,877.95 and 4,327.90

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Solution

The fourth proportional to 7,159.66, 9,877.95 and 4,327.90 is: 5,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.66 : 9,877.95 = 4,327.90 : x
  2. Step 2: Convert to fraction form
    7,159.66/9,877.95 = 4,327.90/x
  3. Step 3: Cross multiply
    7,159.66x = 9,877.95 × 4,327.90
  4. Step 4: Simplify right side
    7,159.66x = 42,750,779.81
  5. Step 5: Solve for x
    x = 42,750,779.81/7,159.66
  6. Step 6: Final answer
    x = 5,971.06

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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.