Home / 6,430.40-9,643.80-2,049.20

Finding the Fourth Proportional to 6,430.40, 9,643.80 and 2,049.20

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Solution

The fourth proportional to 6,430.40, 9,643.80 and 2,049.20 is: 3,073.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.40 : 9,643.80 = 2,049.20 : x
  2. Step 2: Convert to fraction form
    6,430.40/9,643.80 = 2,049.20/x
  3. Step 3: Cross multiply
    6,430.40x = 9,643.80 × 2,049.20
  4. Step 4: Simplify right side
    6,430.40x = 19,762,074.96
  5. Step 5: Solve for x
    x = 19,762,074.96/6,430.40
  6. Step 6: Final answer
    x = 3,073.23

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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.