Home / 8,456.79-12,686.55-2,612.03

Finding the Fourth Proportional to 8,456.79, 12,686.55 and 2,612.03

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Solution

The fourth proportional to 8,456.79, 12,686.55 and 2,612.03 is: 3,918.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.79 : 12,686.55 = 2,612.03 : x
  2. Step 2: Convert to fraction form
    8,456.79/12,686.55 = 2,612.03/x
  3. Step 3: Cross multiply
    8,456.79x = 12,686.55 × 2,612.03
  4. Step 4: Simplify right side
    8,456.79x = 33,137,649.20
  5. Step 5: Solve for x
    x = 33,137,649.20/8,456.79
  6. Step 6: Final answer
    x = 3,918.47

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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.