Home / 7,090.50-9,784.68-3,903.81

Finding the Fourth Proportional to 7,090.50, 9,784.68 and 3,903.81

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Solution

The fourth proportional to 7,090.50, 9,784.68 and 3,903.81 is: 5,387.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.50 : 9,784.68 = 3,903.81 : x
  2. Step 2: Convert to fraction form
    7,090.50/9,784.68 = 3,903.81/x
  3. Step 3: Cross multiply
    7,090.50x = 9,784.68 × 3,903.81
  4. Step 4: Simplify right side
    7,090.50x = 38,197,531.63
  5. Step 5: Solve for x
    x = 38,197,531.63/7,090.50
  6. Step 6: Final answer
    x = 5,387.14

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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.