Home / 2,440.81-3,368.29-1,378.57

Finding the Fourth Proportional to 2,440.81, 3,368.29 and 1,378.57

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Solution

The fourth proportional to 2,440.81, 3,368.29 and 1,378.57 is: 1,902.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,440.81 : 3,368.29 = 1,378.57 : x
  2. Step 2: Convert to fraction form
    2,440.81/3,368.29 = 1,378.57/x
  3. Step 3: Cross multiply
    2,440.81x = 3,368.29 × 1,378.57
  4. Step 4: Simplify right side
    2,440.81x = 4,643,416.65
  5. Step 5: Solve for x
    x = 4,643,416.65/2,440.81
  6. Step 6: Final answer
    x = 1,902.41

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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.