Home / 2,920.17-4,031.00-1,975.51

Finding the Fourth Proportional to 2,920.17, 4,031.00 and 1,975.51

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Solution

The fourth proportional to 2,920.17, 4,031.00 and 1,975.51 is: 2,726.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.17 : 4,031.00 = 1,975.51 : x
  2. Step 2: Convert to fraction form
    2,920.17/4,031.00 = 1,975.51/x
  3. Step 3: Cross multiply
    2,920.17x = 4,031.00 × 1,975.51
  4. Step 4: Simplify right side
    2,920.17x = 7,963,260.70
  5. Step 5: Solve for x
    x = 7,963,260.70/2,920.17
  6. Step 6: Final answer
    x = 2,726.99

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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.