Home / 1,581.35-2,374.08-1,216.40

Finding the Fourth Proportional to 1,581.35, 2,374.08 and 1,216.40

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Solution

The fourth proportional to 1,581.35, 2,374.08 and 1,216.40 is: 1,826.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.35 : 2,374.08 = 1,216.40 : x
  2. Step 2: Convert to fraction form
    1,581.35/2,374.08 = 1,216.40/x
  3. Step 3: Cross multiply
    1,581.35x = 2,374.08 × 1,216.40
  4. Step 4: Simplify right side
    1,581.35x = 2,887,830.91
  5. Step 5: Solve for x
    x = 2,887,830.91/1,581.35
  6. Step 6: Final answer
    x = 1,826.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.