Home / 7,405.80-10,215.20-4,419.32

Finding the Fourth Proportional to 7,405.80, 10,215.20 and 4,419.32

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Solution

The fourth proportional to 7,405.80, 10,215.20 and 4,419.32 is: 6,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.80 : 10,215.20 = 4,419.32 : x
  2. Step 2: Convert to fraction form
    7,405.80/10,215.20 = 4,419.32/x
  3. Step 3: Cross multiply
    7,405.80x = 10,215.20 × 4,419.32
  4. Step 4: Simplify right side
    7,405.80x = 45,144,237.66
  5. Step 5: Solve for x
    x = 45,144,237.66/7,405.80
  6. Step 6: Final answer
    x = 6,095.79

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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.