Home / 1,330.01-1,985.96-1,190.28

Finding the Fourth Proportional to 1,330.01, 1,985.96 and 1,190.28

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Solution

The fourth proportional to 1,330.01, 1,985.96 and 1,190.28 is: 1,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.01 : 1,985.96 = 1,190.28 : x
  2. Step 2: Convert to fraction form
    1,330.01/1,985.96 = 1,190.28/x
  3. Step 3: Cross multiply
    1,330.01x = 1,985.96 × 1,190.28
  4. Step 4: Simplify right side
    1,330.01x = 2,363,842.52
  5. Step 5: Solve for x
    x = 2,363,842.52/1,330.01
  6. Step 6: Final answer
    x = 1,777.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.