Home / 2,275.52-3,138.95-1,331.46

Finding the Fourth Proportional to 2,275.52, 3,138.95 and 1,331.46

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Solution

The fourth proportional to 2,275.52, 3,138.95 and 1,331.46 is: 1,836.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.52 : 3,138.95 = 1,331.46 : x
  2. Step 2: Convert to fraction form
    2,275.52/3,138.95 = 1,331.46/x
  3. Step 3: Cross multiply
    2,275.52x = 3,138.95 × 1,331.46
  4. Step 4: Simplify right side
    2,275.52x = 4,179,379.71
  5. Step 5: Solve for x
    x = 4,179,379.71/2,275.52
  6. Step 6: Final answer
    x = 1,836.67

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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.