Home / 7,115.43-9,817.45-4,878.01

Finding the Fourth Proportional to 7,115.43, 9,817.45 and 4,878.01

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Solution

The fourth proportional to 7,115.43, 9,817.45 and 4,878.01 is: 6,730.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.43 : 9,817.45 = 4,878.01 : x
  2. Step 2: Convert to fraction form
    7,115.43/9,817.45 = 4,878.01/x
  3. Step 3: Cross multiply
    7,115.43x = 9,817.45 × 4,878.01
  4. Step 4: Simplify right side
    7,115.43x = 47,889,570.19
  5. Step 5: Solve for x
    x = 47,889,570.19/7,115.43
  6. Step 6: Final answer
    x = 6,730.38

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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.