Home / 6,421.50-8,868.96-4,321.98

Finding the Fourth Proportional to 6,421.50, 8,868.96 and 4,321.98

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Solution

The fourth proportional to 6,421.50, 8,868.96 and 4,321.98 is: 5,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.50 : 8,868.96 = 4,321.98 : x
  2. Step 2: Convert to fraction form
    6,421.50/8,868.96 = 4,321.98/x
  3. Step 3: Cross multiply
    6,421.50x = 8,868.96 × 4,321.98
  4. Step 4: Simplify right side
    6,421.50x = 38,331,467.74
  5. Step 5: Solve for x
    x = 38,331,467.74/6,421.50
  6. Step 6: Final answer
    x = 5,969.24

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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.