Home / 1,557.37-2,148.55-1,085.14

Finding the Fourth Proportional to 1,557.37, 2,148.55 and 1,085.14

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Solution

The fourth proportional to 1,557.37, 2,148.55 and 1,085.14 is: 1,497.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.37 : 2,148.55 = 1,085.14 : x
  2. Step 2: Convert to fraction form
    1,557.37/2,148.55 = 1,085.14/x
  3. Step 3: Cross multiply
    1,557.37x = 2,148.55 × 1,085.14
  4. Step 4: Simplify right side
    1,557.37x = 2,331,477.55
  5. Step 5: Solve for x
    x = 2,331,477.55/1,557.37
  6. Step 6: Final answer
    x = 1,497.06

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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.