Home / 5,260.72-7,890.91-1,931.62

Finding the Fourth Proportional to 5,260.72, 7,890.91 and 1,931.62

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Solution

The fourth proportional to 5,260.72, 7,890.91 and 1,931.62 is: 2,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.72 : 7,890.91 = 1,931.62 : x
  2. Step 2: Convert to fraction form
    5,260.72/7,890.91 = 1,931.62/x
  3. Step 3: Cross multiply
    5,260.72x = 7,890.91 × 1,931.62
  4. Step 4: Simplify right side
    5,260.72x = 15,242,239.57
  5. Step 5: Solve for x
    x = 15,242,239.57/5,260.72
  6. Step 6: Final answer
    x = 2,897.37

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1.5x scale

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.