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Finding the Fourth Proportional to 7,880.68, 10,875.12 and 4,343.89

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Solution

The fourth proportional to 7,880.68, 10,875.12 and 4,343.89 is: 5,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.68 : 10,875.12 = 4,343.89 : x
  2. Step 2: Convert to fraction form
    7,880.68/10,875.12 = 4,343.89/x
  3. Step 3: Cross multiply
    7,880.68x = 10,875.12 × 4,343.89
  4. Step 4: Simplify right side
    7,880.68x = 47,240,325.02
  5. Step 5: Solve for x
    x = 47,240,325.02/7,880.68
  6. Step 6: Final answer
    x = 5,994.45

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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.