Home / 6,432.78-8,878.71-4,190.70

Finding the Fourth Proportional to 6,432.78, 8,878.71 and 4,190.70

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Solution

The fourth proportional to 6,432.78, 8,878.71 and 4,190.70 is: 5,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,432.78 : 8,878.71 = 4,190.70 : x
  2. Step 2: Convert to fraction form
    6,432.78/8,878.71 = 4,190.70/x
  3. Step 3: Cross multiply
    6,432.78x = 8,878.71 × 4,190.70
  4. Step 4: Simplify right side
    6,432.78x = 37,208,010.00
  5. Step 5: Solve for x
    x = 37,208,010.00/6,432.78
  6. Step 6: Final answer
    x = 5,784.13

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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.