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Finding the Fourth Proportional to 7,880.66, 10,875.78 and 4,343.85

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Solution

The fourth proportional to 7,880.66, 10,875.78 and 4,343.85 is: 5,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.66 : 10,875.78 = 4,343.85 : x
  2. Step 2: Convert to fraction form
    7,880.66/10,875.78 = 4,343.85/x
  3. Step 3: Cross multiply
    7,880.66x = 10,875.78 × 4,343.85
  4. Step 4: Simplify right side
    7,880.66x = 47,242,756.95
  5. Step 5: Solve for x
    x = 47,242,756.95/7,880.66
  6. Step 6: Final answer
    x = 5,994.78

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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.