Home / 1,217.60-1,826.36-486.98

Finding the Fourth Proportional to 1,217.60, 1,826.36 and 486.98

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Solution

The fourth proportional to 1,217.60, 1,826.36 and 486.98 is: 730.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.60 : 1,826.36 = 486.98 : x
  2. Step 2: Convert to fraction form
    1,217.60/1,826.36 = 486.98/x
  3. Step 3: Cross multiply
    1,217.60x = 1,826.36 × 486.98
  4. Step 4: Simplify right side
    1,217.60x = 889,400.79
  5. Step 5: Solve for x
    x = 889,400.79/1,217.60
  6. Step 6: Final answer
    x = 730.45

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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.