Home / 2,547.16-3,820.80-1,378.06

Finding the Fourth Proportional to 2,547.16, 3,820.80 and 1,378.06

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Solution

The fourth proportional to 2,547.16, 3,820.80 and 1,378.06 is: 2,067.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.16 : 3,820.80 = 1,378.06 : x
  2. Step 2: Convert to fraction form
    2,547.16/3,820.80 = 1,378.06/x
  3. Step 3: Cross multiply
    2,547.16x = 3,820.80 × 1,378.06
  4. Step 4: Simplify right side
    2,547.16x = 5,265,291.65
  5. Step 5: Solve for x
    x = 5,265,291.65/2,547.16
  6. Step 6: Final answer
    x = 2,067.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.