Home / 2,455.28-3,388.41-1,407.35

Finding the Fourth Proportional to 2,455.28, 3,388.41 and 1,407.35

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Solution

The fourth proportional to 2,455.28, 3,388.41 and 1,407.35 is: 1,942.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.28 : 3,388.41 = 1,407.35 : x
  2. Step 2: Convert to fraction form
    2,455.28/3,388.41 = 1,407.35/x
  3. Step 3: Cross multiply
    2,455.28x = 3,388.41 × 1,407.35
  4. Step 4: Simplify right side
    2,455.28x = 4,768,678.81
  5. Step 5: Solve for x
    x = 4,768,678.81/2,455.28
  6. Step 6: Final answer
    x = 1,942.21

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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.