Home / 1,534.08-2,117.20-1,180.40

Finding the Fourth Proportional to 1,534.08, 2,117.20 and 1,180.40

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Solution

The fourth proportional to 1,534.08, 2,117.20 and 1,180.40 is: 1,629.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.08 : 2,117.20 = 1,180.40 : x
  2. Step 2: Convert to fraction form
    1,534.08/2,117.20 = 1,180.40/x
  3. Step 3: Cross multiply
    1,534.08x = 2,117.20 × 1,180.40
  4. Step 4: Simplify right side
    1,534.08x = 2,499,142.88
  5. Step 5: Solve for x
    x = 2,499,142.88/1,534.08
  6. Step 6: Final answer
    x = 1,629.08

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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.