Home / 7,031.40-9,702.45-3,887.64

Finding the Fourth Proportional to 7,031.40, 9,702.45 and 3,887.64

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Solution

The fourth proportional to 7,031.40, 9,702.45 and 3,887.64 is: 5,364.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.40 : 9,702.45 = 3,887.64 : x
  2. Step 2: Convert to fraction form
    7,031.40/9,702.45 = 3,887.64/x
  3. Step 3: Cross multiply
    7,031.40x = 9,702.45 × 3,887.64
  4. Step 4: Simplify right side
    7,031.40x = 37,719,632.72
  5. Step 5: Solve for x
    x = 37,719,632.72/7,031.40
  6. Step 6: Final answer
    x = 5,364.46

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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.