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Finding the Fourth Proportional to 6,518.16, 8,990.96 and 4,280.16

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Solution

The fourth proportional to 6,518.16, 8,990.96 and 4,280.16 is: 5,903.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518.16 : 8,990.96 = 4,280.16 : x
  2. Step 2: Convert to fraction form
    6,518.16/8,990.96 = 4,280.16/x
  3. Step 3: Cross multiply
    6,518.16x = 8,990.96 × 4,280.16
  4. Step 4: Simplify right side
    6,518.16x = 38,482,747.35
  5. Step 5: Solve for x
    x = 38,482,747.35/6,518.16
  6. Step 6: Final answer
    x = 5,903.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.