Home / 8,666.19-12,988.50-4,220.22

Finding the Fourth Proportional to 8,666.19, 12,988.50 and 4,220.22

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Solution

The fourth proportional to 8,666.19, 12,988.50 and 4,220.22 is: 6,325.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.19 : 12,988.50 = 4,220.22 : x
  2. Step 2: Convert to fraction form
    8,666.19/12,988.50 = 4,220.22/x
  3. Step 3: Cross multiply
    8,666.19x = 12,988.50 × 4,220.22
  4. Step 4: Simplify right side
    8,666.19x = 54,814,327.47
  5. Step 5: Solve for x
    x = 54,814,327.47/8,666.19
  6. Step 6: Final answer
    x = 6,325.08

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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.