Home / 8,214.32-11,336.40-4,678.64

Finding the Fourth Proportional to 8,214.32, 11,336.40 and 4,678.64

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Solution

The fourth proportional to 8,214.32, 11,336.40 and 4,678.64 is: 6,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,214.32 : 11,336.40 = 4,678.64 : x
  2. Step 2: Convert to fraction form
    8,214.32/11,336.40 = 4,678.64/x
  3. Step 3: Cross multiply
    8,214.32x = 11,336.40 × 4,678.64
  4. Step 4: Simplify right side
    8,214.32x = 53,038,934.50
  5. Step 5: Solve for x
    x = 53,038,934.50/8,214.32
  6. Step 6: Final answer
    x = 6,456.89

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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.