Home / 6,429.36-9,645.53-1,986.86

Finding the Fourth Proportional to 6,429.36, 9,645.53 and 1,986.86

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Solution

The fourth proportional to 6,429.36, 9,645.53 and 1,986.86 is: 2,980.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.36 : 9,645.53 = 1,986.86 : x
  2. Step 2: Convert to fraction form
    6,429.36/9,645.53 = 1,986.86/x
  3. Step 3: Cross multiply
    6,429.36x = 9,645.53 × 1,986.86
  4. Step 4: Simplify right side
    6,429.36x = 19,164,259.57
  5. Step 5: Solve for x
    x = 19,164,259.57/6,429.36
  6. Step 6: Final answer
    x = 2,980.74

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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.