Home / 7,110.79-9,812.85-3,924.05

Finding the Fourth Proportional to 7,110.79, 9,812.85 and 3,924.05

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Solution

The fourth proportional to 7,110.79, 9,812.85 and 3,924.05 is: 5,415.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.79 : 9,812.85 = 3,924.05 : x
  2. Step 2: Convert to fraction form
    7,110.79/9,812.85 = 3,924.05/x
  3. Step 3: Cross multiply
    7,110.79x = 9,812.85 × 3,924.05
  4. Step 4: Simplify right side
    7,110.79x = 38,506,050.26
  5. Step 5: Solve for x
    x = 38,506,050.26/7,110.79
  6. Step 6: Final answer
    x = 5,415.16

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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.