Home / 1,680.95-2,319.84-1,262.59

Finding the Fourth Proportional to 1,680.95, 2,319.84 and 1,262.59

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Solution

The fourth proportional to 1,680.95, 2,319.84 and 1,262.59 is: 1,742.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.95 : 2,319.84 = 1,262.59 : x
  2. Step 2: Convert to fraction form
    1,680.95/2,319.84 = 1,262.59/x
  3. Step 3: Cross multiply
    1,680.95x = 2,319.84 × 1,262.59
  4. Step 4: Simplify right side
    1,680.95x = 2,929,000.99
  5. Step 5: Solve for x
    x = 2,929,000.99/1,680.95
  6. Step 6: Final answer
    x = 1,742.47

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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.