Home / 1,395.14-1,925.18-805.60

Finding the Fourth Proportional to 1,395.14, 1,925.18 and 805.60

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Solution

The fourth proportional to 1,395.14, 1,925.18 and 805.60 is: 1,111.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.14 : 1,925.18 = 805.60 : x
  2. Step 2: Convert to fraction form
    1,395.14/1,925.18 = 805.60/x
  3. Step 3: Cross multiply
    1,395.14x = 1,925.18 × 805.60
  4. Step 4: Simplify right side
    1,395.14x = 1,550,925.01
  5. Step 5: Solve for x
    x = 1,550,925.01/1,395.14
  6. Step 6: Final answer
    x = 1,111.66

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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.