Home / 1,680.67-2,319.06-972.53

Finding the Fourth Proportional to 1,680.67, 2,319.06 and 972.53

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Solution

The fourth proportional to 1,680.67, 2,319.06 and 972.53 is: 1,341.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.67 : 2,319.06 = 972.53 : x
  2. Step 2: Convert to fraction form
    1,680.67/2,319.06 = 972.53/x
  3. Step 3: Cross multiply
    1,680.67x = 2,319.06 × 972.53
  4. Step 4: Simplify right side
    1,680.67x = 2,255,355.42
  5. Step 5: Solve for x
    x = 2,255,355.42/1,680.67
  6. Step 6: Final answer
    x = 1,341.94

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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.