Home / 2,289.70-3,159.95-1,294.92

Finding the Fourth Proportional to 2,289.70, 3,159.95 and 1,294.92

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Solution

The fourth proportional to 2,289.70, 3,159.95 and 1,294.92 is: 1,787.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.70 : 3,159.95 = 1,294.92 : x
  2. Step 2: Convert to fraction form
    2,289.70/3,159.95 = 1,294.92/x
  3. Step 3: Cross multiply
    2,289.70x = 3,159.95 × 1,294.92
  4. Step 4: Simplify right side
    2,289.70x = 4,091,875.98
  5. Step 5: Solve for x
    x = 4,091,875.98/2,289.70
  6. Step 6: Final answer
    x = 1,787.08

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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.