Home / 5,213.51-7,818.90-1,927.55

Finding the Fourth Proportional to 5,213.51, 7,818.90 and 1,927.55

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Solution

The fourth proportional to 5,213.51, 7,818.90 and 1,927.55 is: 2,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.51 : 7,818.90 = 1,927.55 : x
  2. Step 2: Convert to fraction form
    5,213.51/7,818.90 = 1,927.55/x
  3. Step 3: Cross multiply
    5,213.51x = 7,818.90 × 1,927.55
  4. Step 4: Simplify right side
    5,213.51x = 15,071,281.60
  5. Step 5: Solve for x
    x = 15,071,281.60/5,213.51
  6. Step 6: Final answer
    x = 2,890.81

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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.