Home / 2,486.60-3,431.20-1,491.76

Finding the Fourth Proportional to 2,486.60, 3,431.20 and 1,491.76

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Solution

The fourth proportional to 2,486.60, 3,431.20 and 1,491.76 is: 2,058.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.60 : 3,431.20 = 1,491.76 : x
  2. Step 2: Convert to fraction form
    2,486.60/3,431.20 = 1,491.76/x
  3. Step 3: Cross multiply
    2,486.60x = 3,431.20 × 1,491.76
  4. Step 4: Simplify right side
    2,486.60x = 5,118,526.91
  5. Step 5: Solve for x
    x = 5,118,526.91/2,486.60
  6. Step 6: Final answer
    x = 2,058.44

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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.