Home / 8,905.72-12,289.65-4,926.70

Finding the Fourth Proportional to 8,905.72, 12,289.65 and 4,926.70

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Solution

The fourth proportional to 8,905.72, 12,289.65 and 4,926.70 is: 6,798.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.72 : 12,289.65 = 4,926.70 : x
  2. Step 2: Convert to fraction form
    8,905.72/12,289.65 = 4,926.70/x
  3. Step 3: Cross multiply
    8,905.72x = 12,289.65 × 4,926.70
  4. Step 4: Simplify right side
    8,905.72x = 60,547,418.66
  5. Step 5: Solve for x
    x = 60,547,418.66/8,905.72
  6. Step 6: Final answer
    x = 6,798.71

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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.