Home / 8,459.49-12,690.86-2,615.07

Finding the Fourth Proportional to 8,459.49, 12,690.86 and 2,615.07

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Solution

The fourth proportional to 8,459.49, 12,690.86 and 2,615.07 is: 3,923.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.49 : 12,690.86 = 2,615.07 : x
  2. Step 2: Convert to fraction form
    8,459.49/12,690.86 = 2,615.07/x
  3. Step 3: Cross multiply
    8,459.49x = 12,690.86 × 2,615.07
  4. Step 4: Simplify right side
    8,459.49x = 33,187,474.18
  5. Step 5: Solve for x
    x = 33,187,474.18/8,459.49
  6. Step 6: Final answer
    x = 3,923.11

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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.