Home / 2,275.68-3,138.92-1,488.32

Finding the Fourth Proportional to 2,275.68, 3,138.92 and 1,488.32

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Solution

The fourth proportional to 2,275.68, 3,138.92 and 1,488.32 is: 2,052.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.68 : 3,138.92 = 1,488.32 : x
  2. Step 2: Convert to fraction form
    2,275.68/3,138.92 = 1,488.32/x
  3. Step 3: Cross multiply
    2,275.68x = 3,138.92 × 1,488.32
  4. Step 4: Simplify right side
    2,275.68x = 4,671,717.41
  5. Step 5: Solve for x
    x = 4,671,717.41/2,275.68
  6. Step 6: Final answer
    x = 2,052.89

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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.