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Finding the Fourth Proportional to 1,948.92, 2,924.28 and 909.48

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Solution

The fourth proportional to 1,948.92, 2,924.28 and 909.48 is: 1,364.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.92 : 2,924.28 = 909.48 : x
  2. Step 2: Convert to fraction form
    1,948.92/2,924.28 = 909.48/x
  3. Step 3: Cross multiply
    1,948.92x = 2,924.28 × 909.48
  4. Step 4: Simplify right side
    1,948.92x = 2,659,574.17
  5. Step 5: Solve for x
    x = 2,659,574.17/1,948.92
  6. Step 6: Final answer
    x = 1,364.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.