Home / 1,647.04-2,270.28-1,115.76

Finding the Fourth Proportional to 1,647.04, 2,270.28 and 1,115.76

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Solution

The fourth proportional to 1,647.04, 2,270.28 and 1,115.76 is: 1,537.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.04 : 2,270.28 = 1,115.76 : x
  2. Step 2: Convert to fraction form
    1,647.04/2,270.28 = 1,115.76/x
  3. Step 3: Cross multiply
    1,647.04x = 2,270.28 × 1,115.76
  4. Step 4: Simplify right side
    1,647.04x = 2,533,087.61
  5. Step 5: Solve for x
    x = 2,533,087.61/1,647.04
  6. Step 6: Final answer
    x = 1,537.96

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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.