Home / 2,547.16-3,515.18-1,428.14

Finding the Fourth Proportional to 2,547.16, 3,515.18 and 1,428.14

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Solution

The fourth proportional to 2,547.16, 3,515.18 and 1,428.14 is: 1,970.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.16 : 3,515.18 = 1,428.14 : x
  2. Step 2: Convert to fraction form
    2,547.16/3,515.18 = 1,428.14/x
  3. Step 3: Cross multiply
    2,547.16x = 3,515.18 × 1,428.14
  4. Step 4: Simplify right side
    2,547.16x = 5,020,170.81
  5. Step 5: Solve for x
    x = 5,020,170.81/2,547.16
  6. Step 6: Final answer
    x = 1,970.89

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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.