Home / 5,281.12-7,288.32-3,012.40

Finding the Fourth Proportional to 5,281.12, 7,288.32 and 3,012.40

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Solution

The fourth proportional to 5,281.12, 7,288.32 and 3,012.40 is: 4,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.12 : 7,288.32 = 3,012.40 : x
  2. Step 2: Convert to fraction form
    5,281.12/7,288.32 = 3,012.40/x
  3. Step 3: Cross multiply
    5,281.12x = 7,288.32 × 3,012.40
  4. Step 4: Simplify right side
    5,281.12x = 21,955,335.17
  5. Step 5: Solve for x
    x = 21,955,335.17/5,281.12
  6. Step 6: Final answer
    x = 4,157.33

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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.