Home / 5,145.90-7,709.40-2,948.10

Finding the Fourth Proportional to 5,145.90, 7,709.40 and 2,948.10

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Solution

The fourth proportional to 5,145.90, 7,709.40 and 2,948.10 is: 4,416.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.90 : 7,709.40 = 2,948.10 : x
  2. Step 2: Convert to fraction form
    5,145.90/7,709.40 = 2,948.10/x
  3. Step 3: Cross multiply
    5,145.90x = 7,709.40 × 2,948.10
  4. Step 4: Simplify right side
    5,145.90x = 22,728,082.14
  5. Step 5: Solve for x
    x = 22,728,082.14/5,145.90
  6. Step 6: Final answer
    x = 4,416.74

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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.