Home / 2,948.40-4,068.12-1,689.24

Finding the Fourth Proportional to 2,948.40, 4,068.12 and 1,689.24

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Solution

The fourth proportional to 2,948.40, 4,068.12 and 1,689.24 is: 2,330.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.40 : 4,068.12 = 1,689.24 : x
  2. Step 2: Convert to fraction form
    2,948.40/4,068.12 = 1,689.24/x
  3. Step 3: Cross multiply
    2,948.40x = 4,068.12 × 1,689.24
  4. Step 4: Simplify right side
    2,948.40x = 6,872,031.03
  5. Step 5: Solve for x
    x = 6,872,031.03/2,948.40
  6. Step 6: Final answer
    x = 2,330.77

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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.