Home / 1,178.55-1,623.24-1,020.60

Finding the Fourth Proportional to 1,178.55, 1,623.24 and 1,020.60

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Solution

The fourth proportional to 1,178.55, 1,623.24 and 1,020.60 is: 1,405.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.55 : 1,623.24 = 1,020.60 : x
  2. Step 2: Convert to fraction form
    1,178.55/1,623.24 = 1,020.60/x
  3. Step 3: Cross multiply
    1,178.55x = 1,623.24 × 1,020.60
  4. Step 4: Simplify right side
    1,178.55x = 1,656,678.74
  5. Step 5: Solve for x
    x = 1,656,678.74/1,178.55
  6. Step 6: Final answer
    x = 1,405.69

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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.