Home / 1,548.96-2,137.56-919.92

Finding the Fourth Proportional to 1,548.96, 2,137.56 and 919.92

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Solution

The fourth proportional to 1,548.96, 2,137.56 and 919.92 is: 1,269.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.96 : 2,137.56 = 919.92 : x
  2. Step 2: Convert to fraction form
    1,548.96/2,137.56 = 919.92/x
  3. Step 3: Cross multiply
    1,548.96x = 2,137.56 × 919.92
  4. Step 4: Simplify right side
    1,548.96x = 1,966,384.20
  5. Step 5: Solve for x
    x = 1,966,384.20/1,548.96
  6. Step 6: Final answer
    x = 1,269.49

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1.5x scale

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.