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Finding the Fourth Proportional to 1,667.90, 2,499.53 and 626.85

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Solution

The fourth proportional to 1,667.90, 2,499.53 and 626.85 is: 939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667.90 : 2,499.53 = 626.85 : x
  2. Step 2: Convert to fraction form
    1,667.90/2,499.53 = 626.85/x
  3. Step 3: Cross multiply
    1,667.90x = 2,499.53 × 626.85
  4. Step 4: Simplify right side
    1,667.90x = 1,566,830.38
  5. Step 5: Solve for x
    x = 1,566,830.38/1,667.90
  6. Step 6: Final answer
    x = 939.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.