Home / 8,345.58-12,518.40-3,414.35

Finding the Fourth Proportional to 8,345.58, 12,518.40 and 3,414.35

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Solution

The fourth proportional to 8,345.58, 12,518.40 and 3,414.35 is: 5,121.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.58 : 12,518.40 = 3,414.35 : x
  2. Step 2: Convert to fraction form
    8,345.58/12,518.40 = 3,414.35/x
  3. Step 3: Cross multiply
    8,345.58x = 12,518.40 × 3,414.35
  4. Step 4: Simplify right side
    8,345.58x = 42,742,223.93
  5. Step 5: Solve for x
    x = 42,742,223.93/8,345.58
  6. Step 6: Final answer
    x = 5,121.54

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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.