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Finding the Fourth Proportional to 5,253.84, 7,880.76 and 1,791

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Solution

The fourth proportional to 5,253.84, 7,880.76 and 1,791 is: 2,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.84 : 7,880.76 = 1,791 : x
  2. Step 2: Convert to fraction form
    5,253.84/7,880.76 = 1,791/x
  3. Step 3: Cross multiply
    5,253.84x = 7,880.76 × 1,791
  4. Step 4: Simplify right side
    5,253.84x = 14,114,441.16
  5. Step 5: Solve for x
    x = 14,114,441.16/5,253.84
  6. Step 6: Final answer
    x = 2,686.50

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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.