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Finding the Fourth Proportional to 7,289.65, 10,060.50 and 4,145.50

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Solution

The fourth proportional to 7,289.65, 10,060.50 and 4,145.50 is: 5,721.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,289.65 : 10,060.50 = 4,145.50 : x
  2. Step 2: Convert to fraction form
    7,289.65/10,060.50 = 4,145.50/x
  3. Step 3: Cross multiply
    7,289.65x = 10,060.50 × 4,145.50
  4. Step 4: Simplify right side
    7,289.65x = 41,705,802.75
  5. Step 5: Solve for x
    x = 41,705,802.75/7,289.65
  6. Step 6: Final answer
    x = 5,721.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.