Home / 7,615.64-11,423.82-2,421.56

Finding the Fourth Proportional to 7,615.64, 11,423.82 and 2,421.56

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Solution

The fourth proportional to 7,615.64, 11,423.82 and 2,421.56 is: 3,632.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.64 : 11,423.82 = 2,421.56 : x
  2. Step 2: Convert to fraction form
    7,615.64/11,423.82 = 2,421.56/x
  3. Step 3: Cross multiply
    7,615.64x = 11,423.82 × 2,421.56
  4. Step 4: Simplify right side
    7,615.64x = 27,663,465.56
  5. Step 5: Solve for x
    x = 27,663,465.56/7,615.64
  6. Step 6: Final answer
    x = 3,632.45

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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.