Home / 5,288.18-7,931.66-1,392.89

Finding the Fourth Proportional to 5,288.18, 7,931.66 and 1,392.89

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Solution

The fourth proportional to 5,288.18, 7,931.66 and 1,392.89 is: 2,089.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,288.18 : 7,931.66 = 1,392.89 : x
  2. Step 2: Convert to fraction form
    5,288.18/7,931.66 = 1,392.89/x
  3. Step 3: Cross multiply
    5,288.18x = 7,931.66 × 1,392.89
  4. Step 4: Simplify right side
    5,288.18x = 11,047,893.72
  5. Step 5: Solve for x
    x = 11,047,893.72/5,288.18
  6. Step 6: Final answer
    x = 2,089.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.