Home / 8,776.24-12,119.30-5,637.90

Finding the Fourth Proportional to 8,776.24, 12,119.30 and 5,637.90

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Solution

The fourth proportional to 8,776.24, 12,119.30 and 5,637.90 is: 7,785.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,776.24 : 12,119.30 = 5,637.90 : x
  2. Step 2: Convert to fraction form
    8,776.24/12,119.30 = 5,637.90/x
  3. Step 3: Cross multiply
    8,776.24x = 12,119.30 × 5,637.90
  4. Step 4: Simplify right side
    8,776.24x = 68,327,401.47
  5. Step 5: Solve for x
    x = 68,327,401.47/8,776.24
  6. Step 6: Final answer
    x = 7,785.50

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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.