Home / 2,620.36-3,925.93-1,385.05

Finding the Fourth Proportional to 2,620.36, 3,925.93 and 1,385.05

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Solution

The fourth proportional to 2,620.36, 3,925.93 and 1,385.05 is: 2,075.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.36 : 3,925.93 = 1,385.05 : x
  2. Step 2: Convert to fraction form
    2,620.36/3,925.93 = 1,385.05/x
  3. Step 3: Cross multiply
    2,620.36x = 3,925.93 × 1,385.05
  4. Step 4: Simplify right side
    2,620.36x = 5,437,609.35
  5. Step 5: Solve for x
    x = 5,437,609.35/2,620.36
  6. Step 6: Final answer
    x = 2,075.14

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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.