Home / 8,905.88-12,290.31-5,767.53

Finding the Fourth Proportional to 8,905.88, 12,290.31 and 5,767.53

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Solution

The fourth proportional to 8,905.88, 12,290.31 and 5,767.53 is: 7,959.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.88 : 12,290.31 = 5,767.53 : x
  2. Step 2: Convert to fraction form
    8,905.88/12,290.31 = 5,767.53/x
  3. Step 3: Cross multiply
    8,905.88x = 12,290.31 × 5,767.53
  4. Step 4: Simplify right side
    8,905.88x = 70,884,731.63
  5. Step 5: Solve for x
    x = 70,884,731.63/8,905.88
  6. Step 6: Final answer
    x = 7,959.32

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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.