Home / 5,228.21-7,214.95-2,990.18

Finding the Fourth Proportional to 5,228.21, 7,214.95 and 2,990.18

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Solution

The fourth proportional to 5,228.21, 7,214.95 and 2,990.18 is: 4,126.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.21 : 7,214.95 = 2,990.18 : x
  2. Step 2: Convert to fraction form
    5,228.21/7,214.95 = 2,990.18/x
  3. Step 3: Cross multiply
    5,228.21x = 7,214.95 × 2,990.18
  4. Step 4: Simplify right side
    5,228.21x = 21,573,955.64
  5. Step 5: Solve for x
    x = 21,573,955.64/5,228.21
  6. Step 6: Final answer
    x = 4,126.46

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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.