Home / 7,415.15-10,232.12-4,228.20

Finding the Fourth Proportional to 7,415.15, 10,232.12 and 4,228.20

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Solution

The fourth proportional to 7,415.15, 10,232.12 and 4,228.20 is: 5,834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.15 : 10,232.12 = 4,228.20 : x
  2. Step 2: Convert to fraction form
    7,415.15/10,232.12 = 4,228.20/x
  3. Step 3: Cross multiply
    7,415.15x = 10,232.12 × 4,228.20
  4. Step 4: Simplify right side
    7,415.15x = 43,263,460.35
  5. Step 5: Solve for x
    x = 43,263,460.35/7,415.15
  6. Step 6: Final answer
    x = 5,834.47

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Half scale
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Double scale
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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.