Home / 7,387.78-10,189.93-4,401.31

Finding the Fourth Proportional to 7,387.78, 10,189.93 and 4,401.31

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Solution

The fourth proportional to 7,387.78, 10,189.93 and 4,401.31 is: 6,070.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.78 : 10,189.93 = 4,401.31 : x
  2. Step 2: Convert to fraction form
    7,387.78/10,189.93 = 4,401.31/x
  3. Step 3: Cross multiply
    7,387.78x = 10,189.93 × 4,401.31
  4. Step 4: Simplify right side
    7,387.78x = 44,849,040.81
  5. Step 5: Solve for x
    x = 44,849,040.81/7,387.78
  6. Step 6: Final answer
    x = 6,070.71

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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.