Home / 3,710.20-5,120.16-2,031.68

Finding the Fourth Proportional to 3,710.20, 5,120.16 and 2,031.68

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Solution

The fourth proportional to 3,710.20, 5,120.16 and 2,031.68 is: 2,803.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.20 : 5,120.16 = 2,031.68 : x
  2. Step 2: Convert to fraction form
    3,710.20/5,120.16 = 2,031.68/x
  3. Step 3: Cross multiply
    3,710.20x = 5,120.16 × 2,031.68
  4. Step 4: Simplify right side
    3,710.20x = 10,402,526.67
  5. Step 5: Solve for x
    x = 10,402,526.67/3,710.20
  6. Step 6: Final answer
    x = 2,803.76

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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.