Home / 1,690.67-2,331.78-1,060.63

Finding the Fourth Proportional to 1,690.67, 2,331.78 and 1,060.63

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Solution

The fourth proportional to 1,690.67, 2,331.78 and 1,060.63 is: 1,462.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690.67 : 2,331.78 = 1,060.63 : x
  2. Step 2: Convert to fraction form
    1,690.67/2,331.78 = 1,060.63/x
  3. Step 3: Cross multiply
    1,690.67x = 2,331.78 × 1,060.63
  4. Step 4: Simplify right side
    1,690.67x = 2,473,155.82
  5. Step 5: Solve for x
    x = 2,473,155.82/1,690.67
  6. Step 6: Final answer
    x = 1,462.83

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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.