Home / 7,871.30-10,862.40-4,334.51

Finding the Fourth Proportional to 7,871.30, 10,862.40 and 4,334.51

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Solution

The fourth proportional to 7,871.30, 10,862.40 and 4,334.51 is: 5,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.30 : 10,862.40 = 4,334.51 : x
  2. Step 2: Convert to fraction form
    7,871.30/10,862.40 = 4,334.51/x
  3. Step 3: Cross multiply
    7,871.30x = 10,862.40 × 4,334.51
  4. Step 4: Simplify right side
    7,871.30x = 47,083,181.42
  5. Step 5: Solve for x
    x = 47,083,181.42/7,871.30
  6. Step 6: Final answer
    x = 5,981.63

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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.