Home / 6,639.72-9,999.11-5,784.36

Finding the Fourth Proportional to 6,639.72, 9,999.11 and 5,784.36

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Solution

The fourth proportional to 6,639.72, 9,999.11 and 5,784.36 is: 8,710.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.72 : 9,999.11 = 5,784.36 : x
  2. Step 2: Convert to fraction form
    6,639.72/9,999.11 = 5,784.36/x
  3. Step 3: Cross multiply
    6,639.72x = 9,999.11 × 5,784.36
  4. Step 4: Simplify right side
    6,639.72x = 57,838,423.00
  5. Step 5: Solve for x
    x = 57,838,423.00/6,639.72
  6. Step 6: Final answer
    x = 8,710.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.