Home / 5,115.40-7,656.90-4,953.40

Finding the Fourth Proportional to 5,115.40, 7,656.90 and 4,953.40

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Solution

The fourth proportional to 5,115.40, 7,656.90 and 4,953.40 is: 7,414.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.40 : 7,656.90 = 4,953.40 : x
  2. Step 2: Convert to fraction form
    5,115.40/7,656.90 = 4,953.40/x
  3. Step 3: Cross multiply
    5,115.40x = 7,656.90 × 4,953.40
  4. Step 4: Simplify right side
    5,115.40x = 37,927,688.46
  5. Step 5: Solve for x
    x = 37,927,688.46/5,115.40
  6. Step 6: Final answer
    x = 7,414.41

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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.