Home / 1,312.08-1,968.48-1,168.80

Finding the Fourth Proportional to 1,312.08, 1,968.48 and 1,168.80

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Solution

The fourth proportional to 1,312.08, 1,968.48 and 1,168.80 is: 1,753.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.08 : 1,968.48 = 1,168.80 : x
  2. Step 2: Convert to fraction form
    1,312.08/1,968.48 = 1,168.80/x
  3. Step 3: Cross multiply
    1,312.08x = 1,968.48 × 1,168.80
  4. Step 4: Simplify right side
    1,312.08x = 2,300,759.42
  5. Step 5: Solve for x
    x = 2,300,759.42/1,312.08
  6. Step 6: Final answer
    x = 1,753.52

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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.