Home / 8,775.16-12,090.28-5,785.72

Finding the Fourth Proportional to 8,775.16, 12,090.28 and 5,785.72

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Solution

The fourth proportional to 8,775.16, 12,090.28 and 5,785.72 is: 7,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.16 : 12,090.28 = 5,785.72 : x
  2. Step 2: Convert to fraction form
    8,775.16/12,090.28 = 5,785.72/x
  3. Step 3: Cross multiply
    8,775.16x = 12,090.28 × 5,785.72
  4. Step 4: Simplify right side
    8,775.16x = 69,950,974.80
  5. Step 5: Solve for x
    x = 69,950,974.80/8,775.16
  6. Step 6: Final answer
    x = 7,971.48

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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.