Home / 8,918.95-13,378.57-3,374.90

Finding the Fourth Proportional to 8,918.95, 13,378.57 and 3,374.90

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Solution

The fourth proportional to 8,918.95, 13,378.57 and 3,374.90 is: 5,062.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.95 : 13,378.57 = 3,374.90 : x
  2. Step 2: Convert to fraction form
    8,918.95/13,378.57 = 3,374.90/x
  3. Step 3: Cross multiply
    8,918.95x = 13,378.57 × 3,374.90
  4. Step 4: Simplify right side
    8,918.95x = 45,151,335.89
  5. Step 5: Solve for x
    x = 45,151,335.89/8,918.95
  6. Step 6: Final answer
    x = 5,062.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.