Home / 4,740.72-7,111.17-1,278.06

Finding the Fourth Proportional to 4,740.72, 7,111.17 and 1,278.06

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Solution

The fourth proportional to 4,740.72, 7,111.17 and 1,278.06 is: 1,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,740.72 : 7,111.17 = 1,278.06 : x
  2. Step 2: Convert to fraction form
    4,740.72/7,111.17 = 1,278.06/x
  3. Step 3: Cross multiply
    4,740.72x = 7,111.17 × 1,278.06
  4. Step 4: Simplify right side
    4,740.72x = 9,088,501.93
  5. Step 5: Solve for x
    x = 9,088,501.93/4,740.72
  6. Step 6: Final answer
    x = 1,917.11

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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.