Home / 5,390.64-7,439.09-3,000.89

Finding the Fourth Proportional to 5,390.64, 7,439.09 and 3,000.89

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Solution

The fourth proportional to 5,390.64, 7,439.09 and 3,000.89 is: 4,141.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.64 : 7,439.09 = 3,000.89 : x
  2. Step 2: Convert to fraction form
    5,390.64/7,439.09 = 3,000.89/x
  3. Step 3: Cross multiply
    5,390.64x = 7,439.09 × 3,000.89
  4. Step 4: Simplify right side
    5,390.64x = 22,323,838.59
  5. Step 5: Solve for x
    x = 22,323,838.59/5,390.64
  6. Step 6: Final answer
    x = 4,141.22

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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.