Home / 1,946.57-2,920.53-1,215.29

Finding the Fourth Proportional to 1,946.57, 2,920.53 and 1,215.29

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Solution

The fourth proportional to 1,946.57, 2,920.53 and 1,215.29 is: 1,823.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.57 : 2,920.53 = 1,215.29 : x
  2. Step 2: Convert to fraction form
    1,946.57/2,920.53 = 1,215.29/x
  3. Step 3: Cross multiply
    1,946.57x = 2,920.53 × 1,215.29
  4. Step 4: Simplify right side
    1,946.57x = 3,549,276.30
  5. Step 5: Solve for x
    x = 3,549,276.30/1,946.57
  6. Step 6: Final answer
    x = 1,823.35

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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.