Home / 2,948.40-4,068.66-1,689.90

Finding the Fourth Proportional to 2,948.40, 4,068.66 and 1,689.90

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Solution

The fourth proportional to 2,948.40, 4,068.66 and 1,689.90 is: 2,331.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.40 : 4,068.66 = 1,689.90 : x
  2. Step 2: Convert to fraction form
    2,948.40/4,068.66 = 1,689.90/x
  3. Step 3: Cross multiply
    2,948.40x = 4,068.66 × 1,689.90
  4. Step 4: Simplify right side
    2,948.40x = 6,875,628.53
  5. Step 5: Solve for x
    x = 6,875,628.53/2,948.40
  6. Step 6: Final answer
    x = 2,331.99

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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.