Home / 1,533.80-2,300.70-1,188.20

Finding the Fourth Proportional to 1,533.80, 2,300.70 and 1,188.20

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Solution

The fourth proportional to 1,533.80, 2,300.70 and 1,188.20 is: 1,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.80 : 2,300.70 = 1,188.20 : x
  2. Step 2: Convert to fraction form
    1,533.80/2,300.70 = 1,188.20/x
  3. Step 3: Cross multiply
    1,533.80x = 2,300.70 × 1,188.20
  4. Step 4: Simplify right side
    1,533.80x = 2,733,691.74
  5. Step 5: Solve for x
    x = 2,733,691.74/1,533.80
  6. Step 6: Final answer
    x = 1,782.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.