Home / 1,177.60-1,621.80-1,152.09

Finding the Fourth Proportional to 1,177.60, 1,621.80 and 1,152.09

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Solution

The fourth proportional to 1,177.60, 1,621.80 and 1,152.09 is: 1,586.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.60 : 1,621.80 = 1,152.09 : x
  2. Step 2: Convert to fraction form
    1,177.60/1,621.80 = 1,152.09/x
  3. Step 3: Cross multiply
    1,177.60x = 1,621.80 × 1,152.09
  4. Step 4: Simplify right side
    1,177.60x = 1,868,459.56
  5. Step 5: Solve for x
    x = 1,868,459.56/1,177.60
  6. Step 6: Final answer
    x = 1,586.67

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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.