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Finding the Fourth Proportional to 3,090.84, 4,637.10 and 899.76

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Solution

The fourth proportional to 3,090.84, 4,637.10 and 899.76 is: 1,349.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.84 : 4,637.10 = 899.76 : x
  2. Step 2: Convert to fraction form
    3,090.84/4,637.10 = 899.76/x
  3. Step 3: Cross multiply
    3,090.84x = 4,637.10 × 899.76
  4. Step 4: Simplify right side
    3,090.84x = 4,172,277.10
  5. Step 5: Solve for x
    x = 4,172,277.10/3,090.84
  6. Step 6: Final answer
    x = 1,349.88

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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.