Home / 1,312.26-1,968.41-900.15

Finding the Fourth Proportional to 1,312.26, 1,968.41 and 900.15

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Solution

The fourth proportional to 1,312.26, 1,968.41 and 900.15 is: 1,350.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.26 : 1,968.41 = 900.15 : x
  2. Step 2: Convert to fraction form
    1,312.26/1,968.41 = 900.15/x
  3. Step 3: Cross multiply
    1,312.26x = 1,968.41 × 900.15
  4. Step 4: Simplify right side
    1,312.26x = 1,771,859.76
  5. Step 5: Solve for x
    x = 1,771,859.76/1,312.26
  6. Step 6: Final answer
    x = 1,350.24

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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.