Home / 2,421.02-3,631.55-666.05

Finding the Fourth Proportional to 2,421.02, 3,631.55 and 666.05

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Solution

The fourth proportional to 2,421.02, 3,631.55 and 666.05 is: 999.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.02 : 3,631.55 = 666.05 : x
  2. Step 2: Convert to fraction form
    2,421.02/3,631.55 = 666.05/x
  3. Step 3: Cross multiply
    2,421.02x = 3,631.55 × 666.05
  4. Step 4: Simplify right side
    2,421.02x = 2,418,799.63
  5. Step 5: Solve for x
    x = 2,418,799.63/2,421.02
  6. Step 6: Final answer
    x = 999.08

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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.