Home / 2,775.09-3,830.13-1,656.12

Finding the Fourth Proportional to 2,775.09, 3,830.13 and 1,656.12

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Solution

The fourth proportional to 2,775.09, 3,830.13 and 1,656.12 is: 2,285.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.09 : 3,830.13 = 1,656.12 : x
  2. Step 2: Convert to fraction form
    2,775.09/3,830.13 = 1,656.12/x
  3. Step 3: Cross multiply
    2,775.09x = 3,830.13 × 1,656.12
  4. Step 4: Simplify right side
    2,775.09x = 6,343,154.90
  5. Step 5: Solve for x
    x = 6,343,154.90/2,775.09
  6. Step 6: Final answer
    x = 2,285.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.