Home / 8,904.16-12,278.64-5,920.48

Finding the Fourth Proportional to 8,904.16, 12,278.64 and 5,920.48

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Solution

The fourth proportional to 8,904.16, 12,278.64 and 5,920.48 is: 8,164.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.16 : 12,278.64 = 5,920.48 : x
  2. Step 2: Convert to fraction form
    8,904.16/12,278.64 = 5,920.48/x
  3. Step 3: Cross multiply
    8,904.16x = 12,278.64 × 5,920.48
  4. Step 4: Simplify right side
    8,904.16x = 72,695,442.55
  5. Step 5: Solve for x
    x = 72,695,442.55/8,904.16
  6. Step 6: Final answer
    x = 8,164.21

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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.