Home / 1,929.28-2,662.34-1,089.98

Finding the Fourth Proportional to 1,929.28, 2,662.34 and 1,089.98

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Solution

The fourth proportional to 1,929.28, 2,662.34 and 1,089.98 is: 1,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.28 : 2,662.34 = 1,089.98 : x
  2. Step 2: Convert to fraction form
    1,929.28/2,662.34 = 1,089.98/x
  3. Step 3: Cross multiply
    1,929.28x = 2,662.34 × 1,089.98
  4. Step 4: Simplify right side
    1,929.28x = 2,901,886.77
  5. Step 5: Solve for x
    x = 2,901,886.77/1,929.28
  6. Step 6: Final answer
    x = 1,504.13

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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.