Home / 5,228.36-7,215.16-2,870.52

Finding the Fourth Proportional to 5,228.36, 7,215.16 and 2,870.52

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Solution

The fourth proportional to 5,228.36, 7,215.16 and 2,870.52 is: 3,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.36 : 7,215.16 = 2,870.52 : x
  2. Step 2: Convert to fraction form
    5,228.36/7,215.16 = 2,870.52/x
  3. Step 3: Cross multiply
    5,228.36x = 7,215.16 × 2,870.52
  4. Step 4: Simplify right side
    5,228.36x = 20,711,261.08
  5. Step 5: Solve for x
    x = 20,711,261.08/5,228.36
  6. Step 6: Final answer
    x = 3,961.33

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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.