Home / 2,628.07-3,944.32-1,242.40

Finding the Fourth Proportional to 2,628.07, 3,944.32 and 1,242.40

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Solution

The fourth proportional to 2,628.07, 3,944.32 and 1,242.40 is: 1,864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.07 : 3,944.32 = 1,242.40 : x
  2. Step 2: Convert to fraction form
    2,628.07/3,944.32 = 1,242.40/x
  3. Step 3: Cross multiply
    2,628.07x = 3,944.32 × 1,242.40
  4. Step 4: Simplify right side
    2,628.07x = 4,900,423.17
  5. Step 5: Solve for x
    x = 4,900,423.17/2,628.07
  6. Step 6: Final answer
    x = 1,864.65

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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.