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Finding the Fourth Proportional to 6,280.32, 9,420.48 and 1,663.32

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Solution

The fourth proportional to 6,280.32, 9,420.48 and 1,663.32 is: 2,494.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,280.32 : 9,420.48 = 1,663.32 : x
  2. Step 2: Convert to fraction form
    6,280.32/9,420.48 = 1,663.32/x
  3. Step 3: Cross multiply
    6,280.32x = 9,420.48 × 1,663.32
  4. Step 4: Simplify right side
    6,280.32x = 15,669,272.79
  5. Step 5: Solve for x
    x = 15,669,272.79/6,280.32
  6. Step 6: Final answer
    x = 2,494.98

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Double scale
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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.