Home / 5,389.21-7,436.80-3,031.19

Finding the Fourth Proportional to 5,389.21, 7,436.80 and 3,031.19

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Solution

The fourth proportional to 5,389.21, 7,436.80 and 3,031.19 is: 4,182.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.21 : 7,436.80 = 3,031.19 : x
  2. Step 2: Convert to fraction form
    5,389.21/7,436.80 = 3,031.19/x
  3. Step 3: Cross multiply
    5,389.21x = 7,436.80 × 3,031.19
  4. Step 4: Simplify right side
    5,389.21x = 22,542,353.79
  5. Step 5: Solve for x
    x = 22,542,353.79/5,389.21
  6. Step 6: Final answer
    x = 4,182.87

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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.