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Finding the Fourth Proportional to 1,395.53, 1,925.50 and 835.91

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Solution

The fourth proportional to 1,395.53, 1,925.50 and 835.91 is: 1,153.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.53 : 1,925.50 = 835.91 : x
  2. Step 2: Convert to fraction form
    1,395.53/1,925.50 = 835.91/x
  3. Step 3: Cross multiply
    1,395.53x = 1,925.50 × 835.91
  4. Step 4: Simplify right side
    1,395.53x = 1,609,544.71
  5. Step 5: Solve for x
    x = 1,609,544.71/1,395.53
  6. Step 6: Final answer
    x = 1,153.36

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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.