Home / 5,925.12-8,891.20-2,638.40

Finding the Fourth Proportional to 5,925.12, 8,891.20 and 2,638.40

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Solution

The fourth proportional to 5,925.12, 8,891.20 and 2,638.40 is: 3,959.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,925.12 : 8,891.20 = 2,638.40 : x
  2. Step 2: Convert to fraction form
    5,925.12/8,891.20 = 2,638.40/x
  3. Step 3: Cross multiply
    5,925.12x = 8,891.20 × 2,638.40
  4. Step 4: Simplify right side
    5,925.12x = 23,458,542.08
  5. Step 5: Solve for x
    x = 23,458,542.08/5,925.12
  6. Step 6: Final answer
    x = 3,959.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.