Home / 2,278.17-3,145.62-1,779.93

Finding the Fourth Proportional to 2,278.17, 3,145.62 and 1,779.93

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Solution

The fourth proportional to 2,278.17, 3,145.62 and 1,779.93 is: 2,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.17 : 3,145.62 = 1,779.93 : x
  2. Step 2: Convert to fraction form
    2,278.17/3,145.62 = 1,779.93/x
  3. Step 3: Cross multiply
    2,278.17x = 3,145.62 × 1,779.93
  4. Step 4: Simplify right side
    2,278.17x = 5,598,983.41
  5. Step 5: Solve for x
    x = 5,598,983.41/2,278.17
  6. Step 6: Final answer
    x = 2,457.67

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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.