Home / 2,479.21-3,420.23-1,534.75

Finding the Fourth Proportional to 2,479.21, 3,420.23 and 1,534.75

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Solution

The fourth proportional to 2,479.21, 3,420.23 and 1,534.75 is: 2,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.21 : 3,420.23 = 1,534.75 : x
  2. Step 2: Convert to fraction form
    2,479.21/3,420.23 = 1,534.75/x
  3. Step 3: Cross multiply
    2,479.21x = 3,420.23 × 1,534.75
  4. Step 4: Simplify right side
    2,479.21x = 5,249,181.77
  5. Step 5: Solve for x
    x = 5,249,181.77/2,479.21
  6. Step 6: Final answer
    x = 2,117.28

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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.