Home / 4,740.78-7,110.36-1,278.06

Finding the Fourth Proportional to 4,740.78, 7,110.36 and 1,278.06

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Solution

The fourth proportional to 4,740.78, 7,110.36 and 1,278.06 is: 1,916.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,740.78 : 7,110.36 = 1,278.06 : x
  2. Step 2: Convert to fraction form
    4,740.78/7,110.36 = 1,278.06/x
  3. Step 3: Cross multiply
    4,740.78x = 7,110.36 × 1,278.06
  4. Step 4: Simplify right side
    4,740.78x = 9,087,466.70
  5. Step 5: Solve for x
    x = 9,087,466.70/4,740.78
  6. Step 6: Final answer
    x = 1,916.87

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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.