Home / 8,970.15-13,455.13-3,126.75

Finding the Fourth Proportional to 8,970.15, 13,455.13 and 3,126.75

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Solution

The fourth proportional to 8,970.15, 13,455.13 and 3,126.75 is: 4,690.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.15 : 13,455.13 = 3,126.75 : x
  2. Step 2: Convert to fraction form
    8,970.15/13,455.13 = 3,126.75/x
  3. Step 3: Cross multiply
    8,970.15x = 13,455.13 × 3,126.75
  4. Step 4: Simplify right side
    8,970.15x = 42,070,827.73
  5. Step 5: Solve for x
    x = 42,070,827.73/8,970.15
  6. Step 6: Final answer
    x = 4,690.09

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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.