Home / 7,031.60-9,703.86-4,200.20

Finding the Fourth Proportional to 7,031.60, 9,703.86 and 4,200.20

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Solution

The fourth proportional to 7,031.60, 9,703.86 and 4,200.20 is: 5,796.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,031.60 : 9,703.86 = 4,200.20 : x
  2. Step 2: Convert to fraction form
    7,031.60/9,703.86 = 4,200.20/x
  3. Step 3: Cross multiply
    7,031.60x = 9,703.86 × 4,200.20
  4. Step 4: Simplify right side
    7,031.60x = 40,758,152.77
  5. Step 5: Solve for x
    x = 40,758,152.77/7,031.60
  6. Step 6: Final answer
    x = 5,796.43

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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.