Home / 1,680.41-2,318.75-934.22

Finding the Fourth Proportional to 1,680.41, 2,318.75 and 934.22

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Solution

The fourth proportional to 1,680.41, 2,318.75 and 934.22 is: 1,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.41 : 2,318.75 = 934.22 : x
  2. Step 2: Convert to fraction form
    1,680.41/2,318.75 = 934.22/x
  3. Step 3: Cross multiply
    1,680.41x = 2,318.75 × 934.22
  4. Step 4: Simplify right side
    1,680.41x = 2,166,215.06
  5. Step 5: Solve for x
    x = 2,166,215.06/1,680.41
  6. Step 6: Final answer
    x = 1,289.10

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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.