Home / 8,438.01-11,633.54-5,780.67

Finding the Fourth Proportional to 8,438.01, 11,633.54 and 5,780.67

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Solution

The fourth proportional to 8,438.01, 11,633.54 and 5,780.67 is: 7,969.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.01 : 11,633.54 = 5,780.67 : x
  2. Step 2: Convert to fraction form
    8,438.01/11,633.54 = 5,780.67/x
  3. Step 3: Cross multiply
    8,438.01x = 11,633.54 × 5,780.67
  4. Step 4: Simplify right side
    8,438.01x = 67,249,626.77
  5. Step 5: Solve for x
    x = 67,249,626.77/8,438.01
  6. Step 6: Final answer
    x = 7,969.84

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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.