Home / 8,725.30-12,041.85-7,638.63

Finding the Fourth Proportional to 8,725.30, 12,041.85 and 7,638.63

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Solution

The fourth proportional to 8,725.30, 12,041.85 and 7,638.63 is: 10,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.30 : 12,041.85 = 7,638.63 : x
  2. Step 2: Convert to fraction form
    8,725.30/12,041.85 = 7,638.63/x
  3. Step 3: Cross multiply
    8,725.30x = 12,041.85 × 7,638.63
  4. Step 4: Simplify right side
    8,725.30x = 91,983,236.67
  5. Step 5: Solve for x
    x = 91,983,236.67/8,725.30
  6. Step 6: Final answer
    x = 10,542.13

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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.