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Finding the Fourth Proportional to 5,206.75, 7,811.74 and 1,509.50

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Solution

The fourth proportional to 5,206.75, 7,811.74 and 1,509.50 is: 2,264.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.75 : 7,811.74 = 1,509.50 : x
  2. Step 2: Convert to fraction form
    5,206.75/7,811.74 = 1,509.50/x
  3. Step 3: Cross multiply
    5,206.75x = 7,811.74 × 1,509.50
  4. Step 4: Simplify right side
    5,206.75x = 11,791,842.95
  5. Step 5: Solve for x
    x = 11,791,842.95/5,206.75
  6. Step 6: Final answer
    x = 2,264.72

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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.