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Finding the Fourth Proportional to 8,379.96, 12,570.35 and 5,612.19

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Solution

The fourth proportional to 8,379.96, 12,570.35 and 5,612.19 is: 8,418.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.96 : 12,570.35 = 5,612.19 : x
  2. Step 2: Convert to fraction form
    8,379.96/12,570.35 = 5,612.19/x
  3. Step 3: Cross multiply
    8,379.96x = 12,570.35 × 5,612.19
  4. Step 4: Simplify right side
    8,379.96x = 70,547,164.51
  5. Step 5: Solve for x
    x = 70,547,164.51/8,379.96
  6. Step 6: Final answer
    x = 8,418.56

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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.