Home / 7,878.28-10,872.03-4,341.46

Finding the Fourth Proportional to 7,878.28, 10,872.03 and 4,341.46

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Solution

The fourth proportional to 7,878.28, 10,872.03 and 4,341.46 is: 5,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.28 : 10,872.03 = 4,341.46 : x
  2. Step 2: Convert to fraction form
    7,878.28/10,872.03 = 4,341.46/x
  3. Step 3: Cross multiply
    7,878.28x = 10,872.03 × 4,341.46
  4. Step 4: Simplify right side
    7,878.28x = 47,200,483.36
  5. Step 5: Solve for x
    x = 47,200,483.36/7,878.28
  6. Step 6: Final answer
    x = 5,991.22

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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.