Home / 1,782.13-2,457.12-1,118.74

Finding the Fourth Proportional to 1,782.13, 2,457.12 and 1,118.74

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Solution

The fourth proportional to 1,782.13, 2,457.12 and 1,118.74 is: 1,542.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.13 : 2,457.12 = 1,118.74 : x
  2. Step 2: Convert to fraction form
    1,782.13/2,457.12 = 1,118.74/x
  3. Step 3: Cross multiply
    1,782.13x = 2,457.12 × 1,118.74
  4. Step 4: Simplify right side
    1,782.13x = 2,748,878.43
  5. Step 5: Solve for x
    x = 2,748,878.43/1,782.13
  6. Step 6: Final answer
    x = 1,542.47

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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.