Home / 1,780.82-2,457.52-1,035.20

Finding the Fourth Proportional to 1,780.82, 2,457.52 and 1,035.20

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Solution

The fourth proportional to 1,780.82, 2,457.52 and 1,035.20 is: 1,428.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.82 : 2,457.52 = 1,035.20 : x
  2. Step 2: Convert to fraction form
    1,780.82/2,457.52 = 1,035.20/x
  3. Step 3: Cross multiply
    1,780.82x = 2,457.52 × 1,035.20
  4. Step 4: Simplify right side
    1,780.82x = 2,544,024.70
  5. Step 5: Solve for x
    x = 2,544,024.70/1,780.82
  6. Step 6: Final answer
    x = 1,428.57

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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.