Home / 1,781.58-2,457.49-1,151.87

Finding the Fourth Proportional to 1,781.58, 2,457.49 and 1,151.87

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Solution

The fourth proportional to 1,781.58, 2,457.49 and 1,151.87 is: 1,588.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.58 : 2,457.49 = 1,151.87 : x
  2. Step 2: Convert to fraction form
    1,781.58/2,457.49 = 1,151.87/x
  3. Step 3: Cross multiply
    1,781.58x = 2,457.49 × 1,151.87
  4. Step 4: Simplify right side
    1,781.58x = 2,830,703.25
  5. Step 5: Solve for x
    x = 2,830,703.25/1,781.58
  6. Step 6: Final answer
    x = 1,588.87

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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.