Home / 1,557.20-2,147.64-1,165.16

Finding the Fourth Proportional to 1,557.20, 2,147.64 and 1,165.16

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Solution

The fourth proportional to 1,557.20, 2,147.64 and 1,165.16 is: 1,606.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.20 : 2,147.64 = 1,165.16 : x
  2. Step 2: Convert to fraction form
    1,557.20/2,147.64 = 1,165.16/x
  3. Step 3: Cross multiply
    1,557.20x = 2,147.64 × 1,165.16
  4. Step 4: Simplify right side
    1,557.20x = 2,502,344.22
  5. Step 5: Solve for x
    x = 2,502,344.22/1,557.20
  6. Step 6: Final answer
    x = 1,606.95

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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.