Home / 2,782.18-4,146.49-2,777.86

Finding the Fourth Proportional to 2,782.18, 4,146.49 and 2,777.86

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Solution

The fourth proportional to 2,782.18, 4,146.49 and 2,777.86 is: 4,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.18 : 4,146.49 = 2,777.86 : x
  2. Step 2: Convert to fraction form
    2,782.18/4,146.49 = 2,777.86/x
  3. Step 3: Cross multiply
    2,782.18x = 4,146.49 × 2,777.86
  4. Step 4: Simplify right side
    2,782.18x = 11,518,368.71
  5. Step 5: Solve for x
    x = 11,518,368.71/2,782.18
  6. Step 6: Final answer
    x = 4,140.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.