Home / 7,926.45-10,938.40-4,389.78

Finding the Fourth Proportional to 7,926.45, 10,938.40 and 4,389.78

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Solution

The fourth proportional to 7,926.45, 10,938.40 and 4,389.78 is: 6,057.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,926.45 : 10,938.40 = 4,389.78 : x
  2. Step 2: Convert to fraction form
    7,926.45/10,938.40 = 4,389.78/x
  3. Step 3: Cross multiply
    7,926.45x = 10,938.40 × 4,389.78
  4. Step 4: Simplify right side
    7,926.45x = 48,017,169.55
  5. Step 5: Solve for x
    x = 48,017,169.55/7,926.45
  6. Step 6: Final answer
    x = 6,057.84

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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.