Home / 1,781.19-2,457.95-995.22

Finding the Fourth Proportional to 1,781.19, 2,457.95 and 995.22

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Solution

The fourth proportional to 1,781.19, 2,457.95 and 995.22 is: 1,373.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.19 : 2,457.95 = 995.22 : x
  2. Step 2: Convert to fraction form
    1,781.19/2,457.95 = 995.22/x
  3. Step 3: Cross multiply
    1,781.19x = 2,457.95 × 995.22
  4. Step 4: Simplify right side
    1,781.19x = 2,446,196.02
  5. Step 5: Solve for x
    x = 2,446,196.02/1,781.19
  6. Step 6: Final answer
    x = 1,373.35

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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.