Home / 3,031.80-4,178.40-2,280.66

Finding the Fourth Proportional to 3,031.80, 4,178.40 and 2,280.66

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Solution

The fourth proportional to 3,031.80, 4,178.40 and 2,280.66 is: 3,143.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.80 : 4,178.40 = 2,280.66 : x
  2. Step 2: Convert to fraction form
    3,031.80/4,178.40 = 2,280.66/x
  3. Step 3: Cross multiply
    3,031.80x = 4,178.40 × 2,280.66
  4. Step 4: Simplify right side
    3,031.80x = 9,529,509.74
  5. Step 5: Solve for x
    x = 9,529,509.74/3,031.80
  6. Step 6: Final answer
    x = 3,143.19

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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.