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Finding the Fourth Proportional to 2,580.55, 3,560.84 and 2,136.67

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Solution

The fourth proportional to 2,580.55, 3,560.84 and 2,136.67 is: 2,948.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.55 : 3,560.84 = 2,136.67 : x
  2. Step 2: Convert to fraction form
    2,580.55/3,560.84 = 2,136.67/x
  3. Step 3: Cross multiply
    2,580.55x = 3,560.84 × 2,136.67
  4. Step 4: Simplify right side
    2,580.55x = 7,608,329.32
  5. Step 5: Solve for x
    x = 7,608,329.32/2,580.55
  6. Step 6: Final answer
    x = 2,948.34

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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.