Home / 4,089.12-5,642.64-2,271.84

Finding the Fourth Proportional to 4,089.12, 5,642.64 and 2,271.84

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Solution

The fourth proportional to 4,089.12, 5,642.64 and 2,271.84 is: 3,134.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.12 : 5,642.64 = 2,271.84 : x
  2. Step 2: Convert to fraction form
    4,089.12/5,642.64 = 2,271.84/x
  3. Step 3: Cross multiply
    4,089.12x = 5,642.64 × 2,271.84
  4. Step 4: Simplify right side
    4,089.12x = 12,819,175.26
  5. Step 5: Solve for x
    x = 12,819,175.26/4,089.12
  6. Step 6: Final answer
    x = 3,134.95

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Half scale
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Double scale
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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.