Home / 2,949.30-4,069.71-1,690.70

Finding the Fourth Proportional to 2,949.30, 4,069.71 and 1,690.70

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Solution

The fourth proportional to 2,949.30, 4,069.71 and 1,690.70 is: 2,332.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,949.30 : 4,069.71 = 1,690.70 : x
  2. Step 2: Convert to fraction form
    2,949.30/4,069.71 = 1,690.70/x
  3. Step 3: Cross multiply
    2,949.30x = 4,069.71 × 1,690.70
  4. Step 4: Simplify right side
    2,949.30x = 6,880,638.35
  5. Step 5: Solve for x
    x = 6,880,638.35/2,949.30
  6. Step 6: Final answer
    x = 2,332.97

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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.