Home / 8,776.95-12,111.28-5,239.68

Finding the Fourth Proportional to 8,776.95, 12,111.28 and 5,239.68

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Solution

The fourth proportional to 8,776.95, 12,111.28 and 5,239.68 is: 7,230.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,776.95 : 12,111.28 = 5,239.68 : x
  2. Step 2: Convert to fraction form
    8,776.95/12,111.28 = 5,239.68/x
  3. Step 3: Cross multiply
    8,776.95x = 12,111.28 × 5,239.68
  4. Step 4: Simplify right side
    8,776.95x = 63,459,231.59
  5. Step 5: Solve for x
    x = 63,459,231.59/8,776.95
  6. Step 6: Final answer
    x = 7,230.21

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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.