Home / 4,091.20-5,642.88-2,518.72

Finding the Fourth Proportional to 4,091.20, 5,642.88 and 2,518.72

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Solution

The fourth proportional to 4,091.20, 5,642.88 and 2,518.72 is: 3,474.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.20 : 5,642.88 = 2,518.72 : x
  2. Step 2: Convert to fraction form
    4,091.20/5,642.88 = 2,518.72/x
  3. Step 3: Cross multiply
    4,091.20x = 5,642.88 × 2,518.72
  4. Step 4: Simplify right side
    4,091.20x = 14,212,834.71
  5. Step 5: Solve for x
    x = 14,212,834.71/4,091.20
  6. Step 6: Final answer
    x = 3,474.00

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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.