Home / 5,228.36-7,215.18-2,870.76

Finding the Fourth Proportional to 5,228.36, 7,215.18 and 2,870.76

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Solution

The fourth proportional to 5,228.36, 7,215.18 and 2,870.76 is: 3,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.36 : 7,215.18 = 2,870.76 : x
  2. Step 2: Convert to fraction form
    5,228.36/7,215.18 = 2,870.76/x
  3. Step 3: Cross multiply
    5,228.36x = 7,215.18 × 2,870.76
  4. Step 4: Simplify right side
    5,228.36x = 20,713,050.14
  5. Step 5: Solve for x
    x = 20,713,050.14/5,228.36
  6. Step 6: Final answer
    x = 3,961.67

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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.