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Finding the Fourth Proportional to 2,928.48, 4,392.74 and 1,079.66

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Solution

The fourth proportional to 2,928.48, 4,392.74 and 1,079.66 is: 1,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.48 : 4,392.74 = 1,079.66 : x
  2. Step 2: Convert to fraction form
    2,928.48/4,392.74 = 1,079.66/x
  3. Step 3: Cross multiply
    2,928.48x = 4,392.74 × 1,079.66
  4. Step 4: Simplify right side
    2,928.48x = 4,742,665.67
  5. Step 5: Solve for x
    x = 4,742,665.67/2,928.48
  6. Step 6: Final answer
    x = 1,619.50

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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.