Home / 4,309.96-6,464.52-1,390.36

Finding the Fourth Proportional to 4,309.96, 6,464.52 and 1,390.36

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Solution

The fourth proportional to 4,309.96, 6,464.52 and 1,390.36 is: 2,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.96 : 6,464.52 = 1,390.36 : x
  2. Step 2: Convert to fraction form
    4,309.96/6,464.52 = 1,390.36/x
  3. Step 3: Cross multiply
    4,309.96x = 6,464.52 × 1,390.36
  4. Step 4: Simplify right side
    4,309.96x = 8,988,010.03
  5. Step 5: Solve for x
    x = 8,988,010.03/4,309.96
  6. Step 6: Final answer
    x = 2,085.40

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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.