Home / 6,439.62-8,878.10-5,783.52

Finding the Fourth Proportional to 6,439.62, 8,878.10 and 5,783.52

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Solution

The fourth proportional to 6,439.62, 8,878.10 and 5,783.52 is: 7,973.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.62 : 8,878.10 = 5,783.52 : x
  2. Step 2: Convert to fraction form
    6,439.62/8,878.10 = 5,783.52/x
  3. Step 3: Cross multiply
    6,439.62x = 8,878.10 × 5,783.52
  4. Step 4: Simplify right side
    6,439.62x = 51,346,668.91
  5. Step 5: Solve for x
    x = 51,346,668.91/6,439.62
  6. Step 6: Final answer
    x = 7,973.56

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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.