Home / 1,395.20-1,925.16-835.55

Finding the Fourth Proportional to 1,395.20, 1,925.16 and 835.55

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Solution

The fourth proportional to 1,395.20, 1,925.16 and 835.55 is: 1,152.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.20 : 1,925.16 = 835.55 : x
  2. Step 2: Convert to fraction form
    1,395.20/1,925.16 = 835.55/x
  3. Step 3: Cross multiply
    1,395.20x = 1,925.16 × 835.55
  4. Step 4: Simplify right side
    1,395.20x = 1,608,557.81
  5. Step 5: Solve for x
    x = 1,608,557.81/1,395.20
  6. Step 6: Final answer
    x = 1,152.93

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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.