Home / 2,547.79-3,516-1,428.67

Finding the Fourth Proportional to 2,547.79, 3,516 and 1,428.67

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Solution

The fourth proportional to 2,547.79, 3,516 and 1,428.67 is: 1,971.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.79 : 3,516 = 1,428.67 : x
  2. Step 2: Convert to fraction form
    2,547.79/3,516 = 1,428.67/x
  3. Step 3: Cross multiply
    2,547.79x = 3,516 × 1,428.67
  4. Step 4: Simplify right side
    2,547.79x = 5,023,203.72
  5. Step 5: Solve for x
    x = 5,023,203.72/2,547.79
  6. Step 6: Final answer
    x = 1,971.59

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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.