Home / 2,458.76-3,390.30-1,785.20

Finding the Fourth Proportional to 2,458.76, 3,390.30 and 1,785.20

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Solution

The fourth proportional to 2,458.76, 3,390.30 and 1,785.20 is: 2,461.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.76 : 3,390.30 = 1,785.20 : x
  2. Step 2: Convert to fraction form
    2,458.76/3,390.30 = 1,785.20/x
  3. Step 3: Cross multiply
    2,458.76x = 3,390.30 × 1,785.20
  4. Step 4: Simplify right side
    2,458.76x = 6,052,363.56
  5. Step 5: Solve for x
    x = 6,052,363.56/2,458.76
  6. Step 6: Final answer
    x = 2,461.55

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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.