Home / 4,740.78-7,111.55-1,277.98

Finding the Fourth Proportional to 4,740.78, 7,111.55 and 1,277.98

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Solution

The fourth proportional to 4,740.78, 7,111.55 and 1,277.98 is: 1,917.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,740.78 : 7,111.55 = 1,277.98 : x
  2. Step 2: Convert to fraction form
    4,740.78/7,111.55 = 1,277.98/x
  3. Step 3: Cross multiply
    4,740.78x = 7,111.55 × 1,277.98
  4. Step 4: Simplify right side
    4,740.78x = 9,088,418.67
  5. Step 5: Solve for x
    x = 9,088,418.67/4,740.78
  6. Step 6: Final answer
    x = 1,917.07

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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.