Home / 7,400.64-10,203.66-6,219.12

Finding the Fourth Proportional to 7,400.64, 10,203.66 and 6,219.12

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Solution

The fourth proportional to 7,400.64, 10,203.66 and 6,219.12 is: 8,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,400.64 : 10,203.66 = 6,219.12 : x
  2. Step 2: Convert to fraction form
    7,400.64/10,203.66 = 6,219.12/x
  3. Step 3: Cross multiply
    7,400.64x = 10,203.66 × 6,219.12
  4. Step 4: Simplify right side
    7,400.64x = 63,457,785.98
  5. Step 5: Solve for x
    x = 63,457,785.98/7,400.64
  6. Step 6: Final answer
    x = 8,574.63

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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.