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Finding the Fourth Proportional to 2,167.55, 2,991.90 and 1,495.70

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Solution

The fourth proportional to 2,167.55, 2,991.90 and 1,495.70 is: 2,064.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.55 : 2,991.90 = 1,495.70 : x
  2. Step 2: Convert to fraction form
    2,167.55/2,991.90 = 1,495.70/x
  3. Step 3: Cross multiply
    2,167.55x = 2,991.90 × 1,495.70
  4. Step 4: Simplify right side
    2,167.55x = 4,474,969.87
  5. Step 5: Solve for x
    x = 4,474,969.87/2,167.55
  6. Step 6: Final answer
    x = 2,064.53

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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.