Home / 6,430.13-8,871.61-4,191.19

Finding the Fourth Proportional to 6,430.13, 8,871.61 and 4,191.19

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Solution

The fourth proportional to 6,430.13, 8,871.61 and 4,191.19 is: 5,782.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.13 : 8,871.61 = 4,191.19 : x
  2. Step 2: Convert to fraction form
    6,430.13/8,871.61 = 4,191.19/x
  3. Step 3: Cross multiply
    6,430.13x = 8,871.61 × 4,191.19
  4. Step 4: Simplify right side
    6,430.13x = 37,182,578.32
  5. Step 5: Solve for x
    x = 37,182,578.32/6,430.13
  6. Step 6: Final answer
    x = 5,782.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.