Home / 6,420.48-9,617.28-5,641.44

Finding the Fourth Proportional to 6,420.48, 9,617.28 and 5,641.44

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Solution

The fourth proportional to 6,420.48, 9,617.28 and 5,641.44 is: 8,450.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.48 : 9,617.28 = 5,641.44 : x
  2. Step 2: Convert to fraction form
    6,420.48/9,617.28 = 5,641.44/x
  3. Step 3: Cross multiply
    6,420.48x = 9,617.28 × 5,641.44
  4. Step 4: Simplify right side
    6,420.48x = 54,255,308.08
  5. Step 5: Solve for x
    x = 54,255,308.08/6,420.48
  6. Step 6: Final answer
    x = 8,450.35

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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.