Home / 7,880.20-10,875.18-4,343.80

Finding the Fourth Proportional to 7,880.20, 10,875.18 and 4,343.80

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Solution

The fourth proportional to 7,880.20, 10,875.18 and 4,343.80 is: 5,994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.20 : 10,875.18 = 4,343.80 : x
  2. Step 2: Convert to fraction form
    7,880.20/10,875.18 = 4,343.80/x
  3. Step 3: Cross multiply
    7,880.20x = 10,875.18 × 4,343.80
  4. Step 4: Simplify right side
    7,880.20x = 47,239,606.88
  5. Step 5: Solve for x
    x = 47,239,606.88/7,880.20
  6. Step 6: Final answer
    x = 5,994.72

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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.