Home / 6,945.40-10,401.90-4,742.20

Finding the Fourth Proportional to 6,945.40, 10,401.90 and 4,742.20

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Solution

The fourth proportional to 6,945.40, 10,401.90 and 4,742.20 is: 7,102.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.40 : 10,401.90 = 4,742.20 : x
  2. Step 2: Convert to fraction form
    6,945.40/10,401.90 = 4,742.20/x
  3. Step 3: Cross multiply
    6,945.40x = 10,401.90 × 4,742.20
  4. Step 4: Simplify right side
    6,945.40x = 49,327,890.18
  5. Step 5: Solve for x
    x = 49,327,890.18/6,945.40
  6. Step 6: Final answer
    x = 7,102.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.