Home / 5,421.89-7,482.21-2,937.89

Finding the Fourth Proportional to 5,421.89, 7,482.21 and 2,937.89

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Solution

The fourth proportional to 5,421.89, 7,482.21 and 2,937.89 is: 4,054.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.89 : 7,482.21 = 2,937.89 : x
  2. Step 2: Convert to fraction form
    5,421.89/7,482.21 = 2,937.89/x
  3. Step 3: Cross multiply
    5,421.89x = 7,482.21 × 2,937.89
  4. Step 4: Simplify right side
    5,421.89x = 21,981,909.94
  5. Step 5: Solve for x
    x = 21,981,909.94/5,421.89
  6. Step 6: Final answer
    x = 4,054.29

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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.