Home / 2,928.12-4,393.21-1,284.46

Finding the Fourth Proportional to 2,928.12, 4,393.21 and 1,284.46

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Solution

The fourth proportional to 2,928.12, 4,393.21 and 1,284.46 is: 1,927.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.12 : 4,393.21 = 1,284.46 : x
  2. Step 2: Convert to fraction form
    2,928.12/4,393.21 = 1,284.46/x
  3. Step 3: Cross multiply
    2,928.12x = 4,393.21 × 1,284.46
  4. Step 4: Simplify right side
    2,928.12x = 5,642,894.34
  5. Step 5: Solve for x
    x = 5,642,894.34/2,928.12
  6. Step 6: Final answer
    x = 1,927.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.