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Finding the Fourth Proportional to 2,875.74, 4,313.74 and 928.22

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Solution

The fourth proportional to 2,875.74, 4,313.74 and 928.22 is: 1,392.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.74 : 4,313.74 = 928.22 : x
  2. Step 2: Convert to fraction form
    2,875.74/4,313.74 = 928.22/x
  3. Step 3: Cross multiply
    2,875.74x = 4,313.74 × 928.22
  4. Step 4: Simplify right side
    2,875.74x = 4,004,099.74
  5. Step 5: Solve for x
    x = 4,004,099.74/2,875.74
  6. Step 6: Final answer
    x = 1,392.37

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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.