Home / 1,780.50-2,457.36-1,081.74

Finding the Fourth Proportional to 1,780.50, 2,457.36 and 1,081.74

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Solution

The fourth proportional to 1,780.50, 2,457.36 and 1,081.74 is: 1,492.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.50 : 2,457.36 = 1,081.74 : x
  2. Step 2: Convert to fraction form
    1,780.50/2,457.36 = 1,081.74/x
  3. Step 3: Cross multiply
    1,780.50x = 2,457.36 × 1,081.74
  4. Step 4: Simplify right side
    1,780.50x = 2,658,224.61
  5. Step 5: Solve for x
    x = 2,658,224.61/1,780.50
  6. Step 6: Final answer
    x = 1,492.97

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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.