Home / 8,765.06-12,090.48-5,615.78

Finding the Fourth Proportional to 8,765.06, 12,090.48 and 5,615.78

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Solution

The fourth proportional to 8,765.06, 12,090.48 and 5,615.78 is: 7,746.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,765.06 : 12,090.48 = 5,615.78 : x
  2. Step 2: Convert to fraction form
    8,765.06/12,090.48 = 5,615.78/x
  3. Step 3: Cross multiply
    8,765.06x = 12,090.48 × 5,615.78
  4. Step 4: Simplify right side
    8,765.06x = 67,897,475.77
  5. Step 5: Solve for x
    x = 67,897,475.77/8,765.06
  6. Step 6: Final answer
    x = 7,746.38

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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.