Home / 3,618.63-5,430.38-1,670.85

Finding the Fourth Proportional to 3,618.63, 5,430.38 and 1,670.85

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Solution

The fourth proportional to 3,618.63, 5,430.38 and 1,670.85 is: 2,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.63 : 5,430.38 = 1,670.85 : x
  2. Step 2: Convert to fraction form
    3,618.63/5,430.38 = 1,670.85/x
  3. Step 3: Cross multiply
    3,618.63x = 5,430.38 × 1,670.85
  4. Step 4: Simplify right side
    3,618.63x = 9,073,342.07
  5. Step 5: Solve for x
    x = 9,073,342.07/3,618.63
  6. Step 6: Final answer
    x = 2,507.40

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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.