Home / 1,417.59-2,124.09-1,261.80

Finding the Fourth Proportional to 1,417.59, 2,124.09 and 1,261.80

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Solution

The fourth proportional to 1,417.59, 2,124.09 and 1,261.80 is: 1,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.59 : 2,124.09 = 1,261.80 : x
  2. Step 2: Convert to fraction form
    1,417.59/2,124.09 = 1,261.80/x
  3. Step 3: Cross multiply
    1,417.59x = 2,124.09 × 1,261.80
  4. Step 4: Simplify right side
    1,417.59x = 2,680,176.76
  5. Step 5: Solve for x
    x = 2,680,176.76/1,417.59
  6. Step 6: Final answer
    x = 1,890.66

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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.