Home / 7,878.12-10,871.46-4,341.30

Finding the Fourth Proportional to 7,878.12, 10,871.46 and 4,341.30

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Solution

The fourth proportional to 7,878.12, 10,871.46 and 4,341.30 is: 5,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.12 : 10,871.46 = 4,341.30 : x
  2. Step 2: Convert to fraction form
    7,878.12/10,871.46 = 4,341.30/x
  3. Step 3: Cross multiply
    7,878.12x = 10,871.46 × 4,341.30
  4. Step 4: Simplify right side
    7,878.12x = 47,196,269.30
  5. Step 5: Solve for x
    x = 47,196,269.30/7,878.12
  6. Step 6: Final answer
    x = 5,990.80

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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.