Home / 9,144.15-12,605.99-6,490.59

Finding the Fourth Proportional to 9,144.15, 12,605.99 and 6,490.59

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Solution

The fourth proportional to 9,144.15, 12,605.99 and 6,490.59 is: 8,947.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,144.15 : 12,605.99 = 6,490.59 : x
  2. Step 2: Convert to fraction form
    9,144.15/12,605.99 = 6,490.59/x
  3. Step 3: Cross multiply
    9,144.15x = 12,605.99 × 6,490.59
  4. Step 4: Simplify right side
    9,144.15x = 81,820,312.63
  5. Step 5: Solve for x
    x = 81,820,312.63/9,144.15
  6. Step 6: Final answer
    x = 8,947.83

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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.