Home / 5,100.40-7,038.12-2,862.10

Finding the Fourth Proportional to 5,100.40, 7,038.12 and 2,862.10

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Solution

The fourth proportional to 5,100.40, 7,038.12 and 2,862.10 is: 3,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.40 : 7,038.12 = 2,862.10 : x
  2. Step 2: Convert to fraction form
    5,100.40/7,038.12 = 2,862.10/x
  3. Step 3: Cross multiply
    5,100.40x = 7,038.12 × 2,862.10
  4. Step 4: Simplify right side
    5,100.40x = 20,143,803.25
  5. Step 5: Solve for x
    x = 20,143,803.25/5,100.40
  6. Step 6: Final answer
    x = 3,949.46

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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.