Home / 5,387.47-8,081.63-1,438.74

Finding the Fourth Proportional to 5,387.47, 8,081.63 and 1,438.74

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Solution

The fourth proportional to 5,387.47, 8,081.63 and 1,438.74 is: 2,158.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.47 : 8,081.63 = 1,438.74 : x
  2. Step 2: Convert to fraction form
    5,387.47/8,081.63 = 1,438.74/x
  3. Step 3: Cross multiply
    5,387.47x = 8,081.63 × 1,438.74
  4. Step 4: Simplify right side
    5,387.47x = 11,627,364.35
  5. Step 5: Solve for x
    x = 11,627,364.35/5,387.47
  6. Step 6: Final answer
    x = 2,158.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.