Home / 2,448.79-3,379.30-1,386.76

Finding the Fourth Proportional to 2,448.79, 3,379.30 and 1,386.76

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Solution

The fourth proportional to 2,448.79, 3,379.30 and 1,386.76 is: 1,913.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,448.79 : 3,379.30 = 1,386.76 : x
  2. Step 2: Convert to fraction form
    2,448.79/3,379.30 = 1,386.76/x
  3. Step 3: Cross multiply
    2,448.79x = 3,379.30 × 1,386.76
  4. Step 4: Simplify right side
    2,448.79x = 4,686,271.13
  5. Step 5: Solve for x
    x = 4,686,271.13/2,448.79
  6. Step 6: Final answer
    x = 1,913.71

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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.