Home / 9,285.55-12,814.39-6,639.28

Finding the Fourth Proportional to 9,285.55, 12,814.39 and 6,639.28

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Solution

The fourth proportional to 9,285.55, 12,814.39 and 6,639.28 is: 9,162.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,285.55 : 12,814.39 = 6,639.28 : x
  2. Step 2: Convert to fraction form
    9,285.55/12,814.39 = 6,639.28/x
  3. Step 3: Cross multiply
    9,285.55x = 12,814.39 × 6,639.28
  4. Step 4: Simplify right side
    9,285.55x = 85,078,323.24
  5. Step 5: Solve for x
    x = 85,078,323.24/9,285.55
  6. Step 6: Final answer
    x = 9,162.44

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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.