Home / 2,217.98-3,060.77-1,209.70

Finding the Fourth Proportional to 2,217.98, 3,060.77 and 1,209.70

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Solution

The fourth proportional to 2,217.98, 3,060.77 and 1,209.70 is: 1,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.98 : 3,060.77 = 1,209.70 : x
  2. Step 2: Convert to fraction form
    2,217.98/3,060.77 = 1,209.70/x
  3. Step 3: Cross multiply
    2,217.98x = 3,060.77 × 1,209.70
  4. Step 4: Simplify right side
    2,217.98x = 3,702,598.17
  5. Step 5: Solve for x
    x = 3,702,598.17/2,217.98
  6. Step 6: Final answer
    x = 1,669.36

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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.