Home / 4,939.12-6,864.34-4,887.28

Finding the Fourth Proportional to 4,939.12, 6,864.34 and 4,887.28

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Solution

The fourth proportional to 4,939.12, 6,864.34 and 4,887.28 is: 6,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.12 : 6,864.34 = 4,887.28 : x
  2. Step 2: Convert to fraction form
    4,939.12/6,864.34 = 4,887.28/x
  3. Step 3: Cross multiply
    4,939.12x = 6,864.34 × 4,887.28
  4. Step 4: Simplify right side
    4,939.12x = 33,547,951.60
  5. Step 5: Solve for x
    x = 33,547,951.60/4,939.12
  6. Step 6: Final answer
    x = 6,792.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.