Home / 5,407.65-8,106.75-2,123.10

Finding the Fourth Proportional to 5,407.65, 8,106.75 and 2,123.10

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Solution

The fourth proportional to 5,407.65, 8,106.75 and 2,123.10 is: 3,182.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.65 : 8,106.75 = 2,123.10 : x
  2. Step 2: Convert to fraction form
    5,407.65/8,106.75 = 2,123.10/x
  3. Step 3: Cross multiply
    5,407.65x = 8,106.75 × 2,123.10
  4. Step 4: Simplify right side
    5,407.65x = 17,211,440.93
  5. Step 5: Solve for x
    x = 17,211,440.93/5,407.65
  6. Step 6: Final answer
    x = 3,182.79

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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.