Home / 5,421.81-7,482.11-2,937.81

Finding the Fourth Proportional to 5,421.81, 7,482.11 and 2,937.81

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Solution

The fourth proportional to 5,421.81, 7,482.11 and 2,937.81 is: 4,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.81 : 7,482.11 = 2,937.81 : x
  2. Step 2: Convert to fraction form
    5,421.81/7,482.11 = 2,937.81/x
  3. Step 3: Cross multiply
    5,421.81x = 7,482.11 × 2,937.81
  4. Step 4: Simplify right side
    5,421.81x = 21,981,017.58
  5. Step 5: Solve for x
    x = 21,981,017.58/5,421.81
  6. Step 6: Final answer
    x = 4,054.18

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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.