Home / 5,228.55-7,215.15-2,870.64

Finding the Fourth Proportional to 5,228.55, 7,215.15 and 2,870.64

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Solution

The fourth proportional to 5,228.55, 7,215.15 and 2,870.64 is: 3,961.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.55 : 7,215.15 = 2,870.64 : x
  2. Step 2: Convert to fraction form
    5,228.55/7,215.15 = 2,870.64/x
  3. Step 3: Cross multiply
    5,228.55x = 7,215.15 × 2,870.64
  4. Step 4: Simplify right side
    5,228.55x = 20,712,098.20
  5. Step 5: Solve for x
    x = 20,712,098.20/5,228.55
  6. Step 6: Final answer
    x = 3,961.35

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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.