Home / 1,497.35-2,066.90-1,286.69

Finding the Fourth Proportional to 1,497.35, 2,066.90 and 1,286.69

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Solution

The fourth proportional to 1,497.35, 2,066.90 and 1,286.69 is: 1,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,497.35 : 2,066.90 = 1,286.69 : x
  2. Step 2: Convert to fraction form
    1,497.35/2,066.90 = 1,286.69/x
  3. Step 3: Cross multiply
    1,497.35x = 2,066.90 × 1,286.69
  4. Step 4: Simplify right side
    1,497.35x = 2,659,442.79
  5. Step 5: Solve for x
    x = 2,659,442.79/1,497.35
  6. Step 6: Final answer
    x = 1,776.11

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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.