Home / 5,228.63-7,215.70-2,870.95

Finding the Fourth Proportional to 5,228.63, 7,215.70 and 2,870.95

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Solution

The fourth proportional to 5,228.63, 7,215.70 and 2,870.95 is: 3,962.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.63 : 7,215.70 = 2,870.95 : x
  2. Step 2: Convert to fraction form
    5,228.63/7,215.70 = 2,870.95/x
  3. Step 3: Cross multiply
    5,228.63x = 7,215.70 × 2,870.95
  4. Step 4: Simplify right side
    5,228.63x = 20,715,899.56
  5. Step 5: Solve for x
    x = 20,715,899.56/5,228.63
  6. Step 6: Final answer
    x = 3,962.01

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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.