Home / 8,970.31-13,455.53-3,126.92

Finding the Fourth Proportional to 8,970.31, 13,455.53 and 3,126.92

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Solution

The fourth proportional to 8,970.31, 13,455.53 and 3,126.92 is: 4,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.31 : 13,455.53 = 3,126.92 : x
  2. Step 2: Convert to fraction form
    8,970.31/13,455.53 = 3,126.92/x
  3. Step 3: Cross multiply
    8,970.31x = 13,455.53 × 3,126.92
  4. Step 4: Simplify right side
    8,970.31x = 42,074,350.23
  5. Step 5: Solve for x
    x = 42,074,350.23/8,970.31
  6. Step 6: Final answer
    x = 4,690.40

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1.5x scale

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.