Home / 8,920.17-12,315.51-5,567.91

Finding the Fourth Proportional to 8,920.17, 12,315.51 and 5,567.91

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Solution

The fourth proportional to 8,920.17, 12,315.51 and 5,567.91 is: 7,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.17 : 12,315.51 = 5,567.91 : x
  2. Step 2: Convert to fraction form
    8,920.17/12,315.51 = 5,567.91/x
  3. Step 3: Cross multiply
    8,920.17x = 12,315.51 × 5,567.91
  4. Step 4: Simplify right side
    8,920.17x = 68,571,607.59
  5. Step 5: Solve for x
    x = 68,571,607.59/8,920.17
  6. Step 6: Final answer
    x = 7,687.25

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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.