Home / 1,331.15-2,006.85-1,237.19

Finding the Fourth Proportional to 1,331.15, 2,006.85 and 1,237.19

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Solution

The fourth proportional to 1,331.15, 2,006.85 and 1,237.19 is: 1,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.15 : 2,006.85 = 1,237.19 : x
  2. Step 2: Convert to fraction form
    1,331.15/2,006.85 = 1,237.19/x
  3. Step 3: Cross multiply
    1,331.15x = 2,006.85 × 1,237.19
  4. Step 4: Simplify right side
    1,331.15x = 2,482,849.36
  5. Step 5: Solve for x
    x = 2,482,849.36/1,331.15
  6. Step 6: Final answer
    x = 1,865.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.