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Finding the Fourth Proportional to 1,395.01, 1,924.91 and 835.36

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Solution

The fourth proportional to 1,395.01, 1,924.91 and 835.36 is: 1,152.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.01 : 1,924.91 = 835.36 : x
  2. Step 2: Convert to fraction form
    1,395.01/1,924.91 = 835.36/x
  3. Step 3: Cross multiply
    1,395.01x = 1,924.91 × 835.36
  4. Step 4: Simplify right side
    1,395.01x = 1,607,992.82
  5. Step 5: Solve for x
    x = 1,607,992.82/1,395.01
  6. Step 6: Final answer
    x = 1,152.67

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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.