Home / 8,358.81-11,529.63-5,378.43

Finding the Fourth Proportional to 8,358.81, 11,529.63 and 5,378.43

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Solution

The fourth proportional to 8,358.81, 11,529.63 and 5,378.43 is: 7,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.81 : 11,529.63 = 5,378.43 : x
  2. Step 2: Convert to fraction form
    8,358.81/11,529.63 = 5,378.43/x
  3. Step 3: Cross multiply
    8,358.81x = 11,529.63 × 5,378.43
  4. Step 4: Simplify right side
    8,358.81x = 62,011,307.88
  5. Step 5: Solve for x
    x = 62,011,307.88/8,358.81
  6. Step 6: Final answer
    x = 7,418.68

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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.