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Finding the Fourth Proportional to 7,615.34, 11,404.74 and 4,487.93

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Solution

The fourth proportional to 7,615.34, 11,404.74 and 4,487.93 is: 6,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.34 : 11,404.74 = 4,487.93 : x
  2. Step 2: Convert to fraction form
    7,615.34/11,404.74 = 4,487.93/x
  3. Step 3: Cross multiply
    7,615.34x = 11,404.74 × 4,487.93
  4. Step 4: Simplify right side
    7,615.34x = 51,183,674.79
  5. Step 5: Solve for x
    x = 51,183,674.79/7,615.34
  6. Step 6: Final answer
    x = 6,721.13

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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.