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Finding the Fourth Proportional to 1,395.28, 1,924.54 and 835.35

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Solution

The fourth proportional to 1,395.28, 1,924.54 and 835.35 is: 1,152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.28 : 1,924.54 = 835.35 : x
  2. Step 2: Convert to fraction form
    1,395.28/1,924.54 = 835.35/x
  3. Step 3: Cross multiply
    1,395.28x = 1,924.54 × 835.35
  4. Step 4: Simplify right side
    1,395.28x = 1,607,664.49
  5. Step 5: Solve for x
    x = 1,607,664.49/1,395.28
  6. Step 6: Final answer
    x = 1,152.22

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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.