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Finding the Fourth Proportional to 6,315.83, 8,710.71 and 5,557.97

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Solution

The fourth proportional to 6,315.83, 8,710.71 and 5,557.97 is: 7,665.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,315.83 : 8,710.71 = 5,557.97 : x
  2. Step 2: Convert to fraction form
    6,315.83/8,710.71 = 5,557.97/x
  3. Step 3: Cross multiply
    6,315.83x = 8,710.71 × 5,557.97
  4. Step 4: Simplify right side
    6,315.83x = 48,413,865.79
  5. Step 5: Solve for x
    x = 48,413,865.79/6,315.83
  6. Step 6: Final answer
    x = 7,665.48

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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.