Home / 7,031.28-9,702.75-3,887.28

Finding the Fourth Proportional to 7,031.28, 9,702.75 and 3,887.28

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Solution

The fourth proportional to 7,031.28, 9,702.75 and 3,887.28 is: 5,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.28 : 9,702.75 = 3,887.28 : x
  2. Step 2: Convert to fraction form
    7,031.28/9,702.75 = 3,887.28/x
  3. Step 3: Cross multiply
    7,031.28x = 9,702.75 × 3,887.28
  4. Step 4: Simplify right side
    7,031.28x = 37,717,306.02
  5. Step 5: Solve for x
    x = 37,717,306.02/7,031.28
  6. Step 6: Final answer
    x = 5,364.22

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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.