Home / 1,813.98-2,502.42-1,224.70

Finding the Fourth Proportional to 1,813.98, 2,502.42 and 1,224.70

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Solution

The fourth proportional to 1,813.98, 2,502.42 and 1,224.70 is: 1,689.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.98 : 2,502.42 = 1,224.70 : x
  2. Step 2: Convert to fraction form
    1,813.98/2,502.42 = 1,224.70/x
  3. Step 3: Cross multiply
    1,813.98x = 2,502.42 × 1,224.70
  4. Step 4: Simplify right side
    1,813.98x = 3,064,713.77
  5. Step 5: Solve for x
    x = 3,064,713.77/1,813.98
  6. Step 6: Final answer
    x = 1,689.50

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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.