Home / 5,378.17-7,421.63-2,988.31

Finding the Fourth Proportional to 5,378.17, 7,421.63 and 2,988.31

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Solution

The fourth proportional to 5,378.17, 7,421.63 and 2,988.31 is: 4,123.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.17 : 7,421.63 = 2,988.31 : x
  2. Step 2: Convert to fraction form
    5,378.17/7,421.63 = 2,988.31/x
  3. Step 3: Cross multiply
    5,378.17x = 7,421.63 × 2,988.31
  4. Step 4: Simplify right side
    5,378.17x = 22,178,131.15
  5. Step 5: Solve for x
    x = 22,178,131.15/5,378.17
  6. Step 6: Final answer
    x = 4,123.73

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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.