Home / 2,948.71-4,068.25-1,689.91

Finding the Fourth Proportional to 2,948.71, 4,068.25 and 1,689.91

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Solution

The fourth proportional to 2,948.71, 4,068.25 and 1,689.91 is: 2,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.71 : 4,068.25 = 1,689.91 : x
  2. Step 2: Convert to fraction form
    2,948.71/4,068.25 = 1,689.91/x
  3. Step 3: Cross multiply
    2,948.71x = 4,068.25 × 1,689.91
  4. Step 4: Simplify right side
    2,948.71x = 6,874,976.36
  5. Step 5: Solve for x
    x = 6,874,976.36/2,948.71
  6. Step 6: Final answer
    x = 2,331.52

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1.5x scale

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.