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Finding the Fourth Proportional to 1,888.74, 2,829.96 and 655.47

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Solution

The fourth proportional to 1,888.74, 2,829.96 and 655.47 is: 982.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.74 : 2,829.96 = 655.47 : x
  2. Step 2: Convert to fraction form
    1,888.74/2,829.96 = 655.47/x
  3. Step 3: Cross multiply
    1,888.74x = 2,829.96 × 655.47
  4. Step 4: Simplify right side
    1,888.74x = 1,854,953.88
  5. Step 5: Solve for x
    x = 1,854,953.88/1,888.74
  6. Step 6: Final answer
    x = 982.11

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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.