Home / 7,405.36-10,219.48-4,218.32

Finding the Fourth Proportional to 7,405.36, 10,219.48 and 4,218.32

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Solution

The fourth proportional to 7,405.36, 10,219.48 and 4,218.32 is: 5,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.36 : 10,219.48 = 4,218.32 : x
  2. Step 2: Convert to fraction form
    7,405.36/10,219.48 = 4,218.32/x
  3. Step 3: Cross multiply
    7,405.36x = 10,219.48 × 4,218.32
  4. Step 4: Simplify right side
    7,405.36x = 43,109,036.87
  5. Step 5: Solve for x
    x = 43,109,036.87/7,405.36
  6. Step 6: Final answer
    x = 5,821.33

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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.