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Finding the Fourth Proportional to 2,491.55, 3,737.33 and 642.67

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Solution

The fourth proportional to 2,491.55, 3,737.33 and 642.67 is: 964.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.55 : 3,737.33 = 642.67 : x
  2. Step 2: Convert to fraction form
    2,491.55/3,737.33 = 642.67/x
  3. Step 3: Cross multiply
    2,491.55x = 3,737.33 × 642.67
  4. Step 4: Simplify right side
    2,491.55x = 2,401,869.87
  5. Step 5: Solve for x
    x = 2,401,869.87/2,491.55
  6. Step 6: Final answer
    x = 964.01

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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.