Home / 5,113.20-7,669.80-1,826.40

Finding the Fourth Proportional to 5,113.20, 7,669.80 and 1,826.40

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Solution

The fourth proportional to 5,113.20, 7,669.80 and 1,826.40 is: 2,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.20 : 7,669.80 = 1,826.40 : x
  2. Step 2: Convert to fraction form
    5,113.20/7,669.80 = 1,826.40/x
  3. Step 3: Cross multiply
    5,113.20x = 7,669.80 × 1,826.40
  4. Step 4: Simplify right side
    5,113.20x = 14,008,122.72
  5. Step 5: Solve for x
    x = 14,008,122.72/5,113.20
  6. Step 6: Final answer
    x = 2,739.60

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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.