Home / 1,541.08-2,126.62-919.96

Finding the Fourth Proportional to 1,541.08, 2,126.62 and 919.96

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Solution

The fourth proportional to 1,541.08, 2,126.62 and 919.96 is: 1,269.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.08 : 2,126.62 = 919.96 : x
  2. Step 2: Convert to fraction form
    1,541.08/2,126.62 = 919.96/x
  3. Step 3: Cross multiply
    1,541.08x = 2,126.62 × 919.96
  4. Step 4: Simplify right side
    1,541.08x = 1,956,405.34
  5. Step 5: Solve for x
    x = 1,956,405.34/1,541.08
  6. Step 6: Final answer
    x = 1,269.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.