Home / 2,929.91-4,044.74-1,990.67

Finding the Fourth Proportional to 2,929.91, 4,044.74 and 1,990.67

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Solution

The fourth proportional to 2,929.91, 4,044.74 and 1,990.67 is: 2,748.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.91 : 4,044.74 = 1,990.67 : x
  2. Step 2: Convert to fraction form
    2,929.91/4,044.74 = 1,990.67/x
  3. Step 3: Cross multiply
    2,929.91x = 4,044.74 × 1,990.67
  4. Step 4: Simplify right side
    2,929.91x = 8,051,712.40
  5. Step 5: Solve for x
    x = 8,051,712.40/2,929.91
  6. Step 6: Final answer
    x = 2,748.11

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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.