Home / 7,837.18-10,815.11-4,387.72

Finding the Fourth Proportional to 7,837.18, 10,815.11 and 4,387.72

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Solution

The fourth proportional to 7,837.18, 10,815.11 and 4,387.72 is: 6,054.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,837.18 : 10,815.11 = 4,387.72 : x
  2. Step 2: Convert to fraction form
    7,837.18/10,815.11 = 4,387.72/x
  3. Step 3: Cross multiply
    7,837.18x = 10,815.11 × 4,387.72
  4. Step 4: Simplify right side
    7,837.18x = 47,453,598.44
  5. Step 5: Solve for x
    x = 47,453,598.44/7,837.18
  6. Step 6: Final answer
    x = 6,054.93

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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.