Home / 4,279.56-6,420.05-1,358.57

Finding the Fourth Proportional to 4,279.56, 6,420.05 and 1,358.57

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Solution

The fourth proportional to 4,279.56, 6,420.05 and 1,358.57 is: 2,038.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.56 : 6,420.05 = 1,358.57 : x
  2. Step 2: Convert to fraction form
    4,279.56/6,420.05 = 1,358.57/x
  3. Step 3: Cross multiply
    4,279.56x = 6,420.05 × 1,358.57
  4. Step 4: Simplify right side
    4,279.56x = 8,722,055.23
  5. Step 5: Solve for x
    x = 8,722,055.23/4,279.56
  6. Step 6: Final answer
    x = 2,038.07

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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.