Home / 1,680.66-2,319.48-934.92

Finding the Fourth Proportional to 1,680.66, 2,319.48 and 934.92

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Solution

The fourth proportional to 1,680.66, 2,319.48 and 934.92 is: 1,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.66 : 2,319.48 = 934.92 : x
  2. Step 2: Convert to fraction form
    1,680.66/2,319.48 = 934.92/x
  3. Step 3: Cross multiply
    1,680.66x = 2,319.48 × 934.92
  4. Step 4: Simplify right side
    1,680.66x = 2,168,528.24
  5. Step 5: Solve for x
    x = 2,168,528.24/1,680.66
  6. Step 6: Final answer
    x = 1,290.28

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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.