Home / 1,927.30-2,890.14-1,311.34

Finding the Fourth Proportional to 1,927.30, 2,890.14 and 1,311.34

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Solution

The fourth proportional to 1,927.30, 2,890.14 and 1,311.34 is: 1,966.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.30 : 2,890.14 = 1,311.34 : x
  2. Step 2: Convert to fraction form
    1,927.30/2,890.14 = 1,311.34/x
  3. Step 3: Cross multiply
    1,927.30x = 2,890.14 × 1,311.34
  4. Step 4: Simplify right side
    1,927.30x = 3,789,956.19
  5. Step 5: Solve for x
    x = 3,789,956.19/1,927.30
  6. Step 6: Final answer
    x = 1,966.46

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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.