Home / 2,015.24-2,778.96-1,572.40

Finding the Fourth Proportional to 2,015.24, 2,778.96 and 1,572.40

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Solution

The fourth proportional to 2,015.24, 2,778.96 and 1,572.40 is: 2,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.24 : 2,778.96 = 1,572.40 : x
  2. Step 2: Convert to fraction form
    2,015.24/2,778.96 = 1,572.40/x
  3. Step 3: Cross multiply
    2,015.24x = 2,778.96 × 1,572.40
  4. Step 4: Simplify right side
    2,015.24x = 4,369,636.70
  5. Step 5: Solve for x
    x = 4,369,636.70/2,015.24
  6. Step 6: Final answer
    x = 2,168.30

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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.