Home / 7,960.20-10,987.02-4,817.40

Finding the Fourth Proportional to 7,960.20, 10,987.02 and 4,817.40

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Solution

The fourth proportional to 7,960.20, 10,987.02 and 4,817.40 is: 6,649.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.20 : 10,987.02 = 4,817.40 : x
  2. Step 2: Convert to fraction form
    7,960.20/10,987.02 = 4,817.40/x
  3. Step 3: Cross multiply
    7,960.20x = 10,987.02 × 4,817.40
  4. Step 4: Simplify right side
    7,960.20x = 52,928,870.15
  5. Step 5: Solve for x
    x = 52,928,870.15/7,960.20
  6. Step 6: Final answer
    x = 6,649.19

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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.