Home / 6,920.02-10,380.03-1,988.74

Finding the Fourth Proportional to 6,920.02, 10,380.03 and 1,988.74

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Solution

The fourth proportional to 6,920.02, 10,380.03 and 1,988.74 is: 2,983.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.02 : 10,380.03 = 1,988.74 : x
  2. Step 2: Convert to fraction form
    6,920.02/10,380.03 = 1,988.74/x
  3. Step 3: Cross multiply
    6,920.02x = 10,380.03 × 1,988.74
  4. Step 4: Simplify right side
    6,920.02x = 20,643,180.86
  5. Step 5: Solve for x
    x = 20,643,180.86/6,920.02
  6. Step 6: Final answer
    x = 2,983.11

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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.