Home / 2,901.16-4,031.37-2,871.05

Finding the Fourth Proportional to 2,901.16, 4,031.37 and 2,871.05

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Solution

The fourth proportional to 2,901.16, 4,031.37 and 2,871.05 is: 3,989.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,901.16 : 4,031.37 = 2,871.05 : x
  2. Step 2: Convert to fraction form
    2,901.16/4,031.37 = 2,871.05/x
  3. Step 3: Cross multiply
    2,901.16x = 4,031.37 × 2,871.05
  4. Step 4: Simplify right side
    2,901.16x = 11,574,264.84
  5. Step 5: Solve for x
    x = 11,574,264.84/2,901.16
  6. Step 6: Final answer
    x = 3,989.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.