Home / 2,565.06-3,539.78-1,386.13

Finding the Fourth Proportional to 2,565.06, 3,539.78 and 1,386.13

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Solution

The fourth proportional to 2,565.06, 3,539.78 and 1,386.13 is: 1,912.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,565.06 : 3,539.78 = 1,386.13 : x
  2. Step 2: Convert to fraction form
    2,565.06/3,539.78 = 1,386.13/x
  3. Step 3: Cross multiply
    2,565.06x = 3,539.78 × 1,386.13
  4. Step 4: Simplify right side
    2,565.06x = 4,906,595.25
  5. Step 5: Solve for x
    x = 4,906,595.25/2,565.06
  6. Step 6: Final answer
    x = 1,912.86

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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.