Home / 2,921.54-4,382.94-947.16

Finding the Fourth Proportional to 2,921.54, 4,382.94 and 947.16

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Solution

The fourth proportional to 2,921.54, 4,382.94 and 947.16 is: 1,420.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.54 : 4,382.94 = 947.16 : x
  2. Step 2: Convert to fraction form
    2,921.54/4,382.94 = 947.16/x
  3. Step 3: Cross multiply
    2,921.54x = 4,382.94 × 947.16
  4. Step 4: Simplify right side
    2,921.54x = 4,151,345.45
  5. Step 5: Solve for x
    x = 4,151,345.45/2,921.54
  6. Step 6: Final answer
    x = 1,420.94

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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.