Home / 6,987.29-10,480.08-1,989.77

Finding the Fourth Proportional to 6,987.29, 10,480.08 and 1,989.77

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Solution

The fourth proportional to 6,987.29, 10,480.08 and 1,989.77 is: 2,984.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.29 : 10,480.08 = 1,989.77 : x
  2. Step 2: Convert to fraction form
    6,987.29/10,480.08 = 1,989.77/x
  3. Step 3: Cross multiply
    6,987.29x = 10,480.08 × 1,989.77
  4. Step 4: Simplify right side
    6,987.29x = 20,852,948.78
  5. Step 5: Solve for x
    x = 20,852,948.78/6,987.29
  6. Step 6: Final answer
    x = 2,984.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.