Home / 6,430.36-9,647.03-1,987.86

Finding the Fourth Proportional to 6,430.36, 9,647.03 and 1,987.86

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Solution

The fourth proportional to 6,430.36, 9,647.03 and 1,987.86 is: 2,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.36 : 9,647.03 = 1,987.86 : x
  2. Step 2: Convert to fraction form
    6,430.36/9,647.03 = 1,987.86/x
  3. Step 3: Cross multiply
    6,430.36x = 9,647.03 × 1,987.86
  4. Step 4: Simplify right side
    6,430.36x = 19,176,945.06
  5. Step 5: Solve for x
    x = 19,176,945.06/6,430.36
  6. Step 6: Final answer
    x = 2,982.25

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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.