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Finding the Fourth Proportional to 5,206.86, 7,809.21 and 1,509.30

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Solution

The fourth proportional to 5,206.86, 7,809.21 and 1,509.30 is: 2,263.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,206.86 : 7,809.21 = 1,509.30 : x
  2. Step 2: Convert to fraction form
    5,206.86/7,809.21 = 1,509.30/x
  3. Step 3: Cross multiply
    5,206.86x = 7,809.21 × 1,509.30
  4. Step 4: Simplify right side
    5,206.86x = 11,786,440.65
  5. Step 5: Solve for x
    x = 11,786,440.65/5,206.86
  6. Step 6: Final answer
    x = 2,263.64

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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.