Home / 1,555.23-2,149.28-1,275.01

Finding the Fourth Proportional to 1,555.23, 2,149.28 and 1,275.01

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Solution

The fourth proportional to 1,555.23, 2,149.28 and 1,275.01 is: 1,762.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.23 : 2,149.28 = 1,275.01 : x
  2. Step 2: Convert to fraction form
    1,555.23/2,149.28 = 1,275.01/x
  3. Step 3: Cross multiply
    1,555.23x = 2,149.28 × 1,275.01
  4. Step 4: Simplify right side
    1,555.23x = 2,740,353.49
  5. Step 5: Solve for x
    x = 2,740,353.49/1,555.23
  6. Step 6: Final answer
    x = 1,762.02

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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.