Home / 3,688.96-5,097.72-2,909.20

Finding the Fourth Proportional to 3,688.96, 5,097.72 and 2,909.20

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Solution

The fourth proportional to 3,688.96, 5,097.72 and 2,909.20 is: 4,020.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.96 : 5,097.72 = 2,909.20 : x
  2. Step 2: Convert to fraction form
    3,688.96/5,097.72 = 2,909.20/x
  3. Step 3: Cross multiply
    3,688.96x = 5,097.72 × 2,909.20
  4. Step 4: Simplify right side
    3,688.96x = 14,830,287.02
  5. Step 5: Solve for x
    x = 14,830,287.02/3,688.96
  6. Step 6: Final answer
    x = 4,020.18

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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.