Home / 2,558.25-3,529.80-1,439.13

Finding the Fourth Proportional to 2,558.25, 3,529.80 and 1,439.13

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Solution

The fourth proportional to 2,558.25, 3,529.80 and 1,439.13 is: 1,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,558.25 : 3,529.80 = 1,439.13 : x
  2. Step 2: Convert to fraction form
    2,558.25/3,529.80 = 1,439.13/x
  3. Step 3: Cross multiply
    2,558.25x = 3,529.80 × 1,439.13
  4. Step 4: Simplify right side
    2,558.25x = 5,079,841.07
  5. Step 5: Solve for x
    x = 5,079,841.07/2,558.25
  6. Step 6: Final answer
    x = 1,985.67

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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.