Home / 1,781.78-2,459.40-1,036.10

Finding the Fourth Proportional to 1,781.78, 2,459.40 and 1,036.10

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Solution

The fourth proportional to 1,781.78, 2,459.40 and 1,036.10 is: 1,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.78 : 2,459.40 = 1,036.10 : x
  2. Step 2: Convert to fraction form
    1,781.78/2,459.40 = 1,036.10/x
  3. Step 3: Cross multiply
    1,781.78x = 2,459.40 × 1,036.10
  4. Step 4: Simplify right side
    1,781.78x = 2,548,184.34
  5. Step 5: Solve for x
    x = 2,548,184.34/1,781.78
  6. Step 6: Final answer
    x = 1,430.13

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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.