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Finding the Fourth Proportional to 6,435.79, 8,878.23 and 4,048.65

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Solution

The fourth proportional to 6,435.79, 8,878.23 and 4,048.65 is: 5,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,435.79 : 8,878.23 = 4,048.65 : x
  2. Step 2: Convert to fraction form
    6,435.79/8,878.23 = 4,048.65/x
  3. Step 3: Cross multiply
    6,435.79x = 8,878.23 × 4,048.65
  4. Step 4: Simplify right side
    6,435.79x = 35,944,845.89
  5. Step 5: Solve for x
    x = 35,944,845.89/6,435.79
  6. Step 6: Final answer
    x = 5,585.15

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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.