Home / 2,928.24-4,390.80-1,284.24

Finding the Fourth Proportional to 2,928.24, 4,390.80 and 1,284.24

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Solution

The fourth proportional to 2,928.24, 4,390.80 and 1,284.24 is: 1,925.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.24 : 4,390.80 = 1,284.24 : x
  2. Step 2: Convert to fraction form
    2,928.24/4,390.80 = 1,284.24/x
  3. Step 3: Cross multiply
    2,928.24x = 4,390.80 × 1,284.24
  4. Step 4: Simplify right side
    2,928.24x = 5,638,840.99
  5. Step 5: Solve for x
    x = 5,638,840.99/2,928.24
  6. Step 6: Final answer
    x = 1,925.68

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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.