Home / 1,775.28-2,445.66-1,243.20

Finding the Fourth Proportional to 1,775.28, 2,445.66 and 1,243.20

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Solution

The fourth proportional to 1,775.28, 2,445.66 and 1,243.20 is: 1,712.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.28 : 2,445.66 = 1,243.20 : x
  2. Step 2: Convert to fraction form
    1,775.28/2,445.66 = 1,243.20/x
  3. Step 3: Cross multiply
    1,775.28x = 2,445.66 × 1,243.20
  4. Step 4: Simplify right side
    1,775.28x = 3,040,444.51
  5. Step 5: Solve for x
    x = 3,040,444.51/1,775.28
  6. Step 6: Final answer
    x = 1,712.66

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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.