Home / 2,665.02-3,676.68-1,781.40

Finding the Fourth Proportional to 2,665.02, 3,676.68 and 1,781.40

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Solution

The fourth proportional to 2,665.02, 3,676.68 and 1,781.40 is: 2,457.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.02 : 3,676.68 = 1,781.40 : x
  2. Step 2: Convert to fraction form
    2,665.02/3,676.68 = 1,781.40/x
  3. Step 3: Cross multiply
    2,665.02x = 3,676.68 × 1,781.40
  4. Step 4: Simplify right side
    2,665.02x = 6,549,637.75
  5. Step 5: Solve for x
    x = 6,549,637.75/2,665.02
  6. Step 6: Final answer
    x = 2,457.63

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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.