Home / 8,219.32-11,347.26-5,429.68

Finding the Fourth Proportional to 8,219.32, 11,347.26 and 5,429.68

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Solution

The fourth proportional to 8,219.32, 11,347.26 and 5,429.68 is: 7,496.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.32 : 11,347.26 = 5,429.68 : x
  2. Step 2: Convert to fraction form
    8,219.32/11,347.26 = 5,429.68/x
  3. Step 3: Cross multiply
    8,219.32x = 11,347.26 × 5,429.68
  4. Step 4: Simplify right side
    8,219.32x = 61,611,990.68
  5. Step 5: Solve for x
    x = 61,611,990.68/8,219.32
  6. Step 6: Final answer
    x = 7,496.00

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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.