Home / 8,678.10-11,975.63-4,699.18

Finding the Fourth Proportional to 8,678.10, 11,975.63 and 4,699.18

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Solution

The fourth proportional to 8,678.10, 11,975.63 and 4,699.18 is: 6,484.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.10 : 11,975.63 = 4,699.18 : x
  2. Step 2: Convert to fraction form
    8,678.10/11,975.63 = 4,699.18/x
  3. Step 3: Cross multiply
    8,678.10x = 11,975.63 × 4,699.18
  4. Step 4: Simplify right side
    8,678.10x = 56,275,640.98
  5. Step 5: Solve for x
    x = 56,275,640.98/8,678.10
  6. Step 6: Final answer
    x = 6,484.79

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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.