Home / 1,865.76-2,573.28-1,157.20

Finding the Fourth Proportional to 1,865.76, 2,573.28 and 1,157.20

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Solution

The fourth proportional to 1,865.76, 2,573.28 and 1,157.20 is: 1,596.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.76 : 2,573.28 = 1,157.20 : x
  2. Step 2: Convert to fraction form
    1,865.76/2,573.28 = 1,157.20/x
  3. Step 3: Cross multiply
    1,865.76x = 2,573.28 × 1,157.20
  4. Step 4: Simplify right side
    1,865.76x = 2,977,799.62
  5. Step 5: Solve for x
    x = 2,977,799.62/1,865.76
  6. Step 6: Final answer
    x = 1,596.03

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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.