Home / 5,177.81-7,766.72-1,890.15

Finding the Fourth Proportional to 5,177.81, 7,766.72 and 1,890.15

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Solution

The fourth proportional to 5,177.81, 7,766.72 and 1,890.15 is: 2,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.81 : 7,766.72 = 1,890.15 : x
  2. Step 2: Convert to fraction form
    5,177.81/7,766.72 = 1,890.15/x
  3. Step 3: Cross multiply
    5,177.81x = 7,766.72 × 1,890.15
  4. Step 4: Simplify right side
    5,177.81x = 14,680,256.36
  5. Step 5: Solve for x
    x = 14,680,256.36/5,177.81
  6. Step 6: Final answer
    x = 2,835.23

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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.