Home / 2,547.53-3,515.50-1,428.65

Finding the Fourth Proportional to 2,547.53, 3,515.50 and 1,428.65

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Solution

The fourth proportional to 2,547.53, 3,515.50 and 1,428.65 is: 1,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.53 : 3,515.50 = 1,428.65 : x
  2. Step 2: Convert to fraction form
    2,547.53/3,515.50 = 1,428.65/x
  3. Step 3: Cross multiply
    2,547.53x = 3,515.50 × 1,428.65
  4. Step 4: Simplify right side
    2,547.53x = 5,022,397.93
  5. Step 5: Solve for x
    x = 5,022,397.93/2,547.53
  6. Step 6: Final answer
    x = 1,971.48

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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.