Home / 1,680.84-2,319.46-934.76

Finding the Fourth Proportional to 1,680.84, 2,319.46 and 934.76

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Solution

The fourth proportional to 1,680.84, 2,319.46 and 934.76 is: 1,289.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.84 : 2,319.46 = 934.76 : x
  2. Step 2: Convert to fraction form
    1,680.84/2,319.46 = 934.76/x
  3. Step 3: Cross multiply
    1,680.84x = 2,319.46 × 934.76
  4. Step 4: Simplify right side
    1,680.84x = 2,168,138.43
  5. Step 5: Solve for x
    x = 2,168,138.43/1,680.84
  6. Step 6: Final answer
    x = 1,289.91

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Double scale
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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.