Home / 5,619.81-8,430.13-2,157.06

Finding the Fourth Proportional to 5,619.81, 8,430.13 and 2,157.06

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Solution

The fourth proportional to 5,619.81, 8,430.13 and 2,157.06 is: 3,235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.81 : 8,430.13 = 2,157.06 : x
  2. Step 2: Convert to fraction form
    5,619.81/8,430.13 = 2,157.06/x
  3. Step 3: Cross multiply
    5,619.81x = 8,430.13 × 2,157.06
  4. Step 4: Simplify right side
    5,619.81x = 18,184,306.51
  5. Step 5: Solve for x
    x = 18,184,306.51/5,619.81
  6. Step 6: Final answer
    x = 3,235.75

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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.