Home / 2,639.01-3,637.24-1,929.76

Finding the Fourth Proportional to 2,639.01, 3,637.24 and 1,929.76

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Solution

The fourth proportional to 2,639.01, 3,637.24 and 1,929.76 is: 2,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.01 : 3,637.24 = 1,929.76 : x
  2. Step 2: Convert to fraction form
    2,639.01/3,637.24 = 1,929.76/x
  3. Step 3: Cross multiply
    2,639.01x = 3,637.24 × 1,929.76
  4. Step 4: Simplify right side
    2,639.01x = 7,018,986.34
  5. Step 5: Solve for x
    x = 7,018,986.34/2,639.01
  6. Step 6: Final answer
    x = 2,659.70

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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.