Home / 1,217.80-1,826.70-1,073.80

Finding the Fourth Proportional to 1,217.80, 1,826.70 and 1,073.80

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Solution

The fourth proportional to 1,217.80, 1,826.70 and 1,073.80 is: 1,610.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.80 : 1,826.70 = 1,073.80 : x
  2. Step 2: Convert to fraction form
    1,217.80/1,826.70 = 1,073.80/x
  3. Step 3: Cross multiply
    1,217.80x = 1,826.70 × 1,073.80
  4. Step 4: Simplify right side
    1,217.80x = 1,961,510.46
  5. Step 5: Solve for x
    x = 1,961,510.46/1,217.80
  6. Step 6: Final answer
    x = 1,610.70

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1.5x scale

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.