Home / 6,430.20-9,645.30-4,972.20

Finding the Fourth Proportional to 6,430.20, 9,645.30 and 4,972.20

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Solution

The fourth proportional to 6,430.20, 9,645.30 and 4,972.20 is: 7,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.20 : 9,645.30 = 4,972.20 : x
  2. Step 2: Convert to fraction form
    6,430.20/9,645.30 = 4,972.20/x
  3. Step 3: Cross multiply
    6,430.20x = 9,645.30 × 4,972.20
  4. Step 4: Simplify right side
    6,430.20x = 47,958,360.66
  5. Step 5: Solve for x
    x = 47,958,360.66/6,430.20
  6. Step 6: Final answer
    x = 7,458.30

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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.