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Finding the Fourth Proportional to 7,880, 10,874.40 and 4,901.44

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Solution

The fourth proportional to 7,880, 10,874.40 and 4,901.44 is: 6,763.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880 : 10,874.40 = 4,901.44 : x
  2. Step 2: Convert to fraction form
    7,880/10,874.40 = 4,901.44/x
  3. Step 3: Cross multiply
    7,880x = 10,874.40 × 4,901.44
  4. Step 4: Simplify right side
    7,880x = 53,300,219.14
  5. Step 5: Solve for x
    x = 53,300,219.14/7,880
  6. Step 6: Final answer
    x = 6,763.99

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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.