Home / 1,299.04-1,783.60-1,265.21

Finding the Fourth Proportional to 1,299.04, 1,783.60 and 1,265.21

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Solution

The fourth proportional to 1,299.04, 1,783.60 and 1,265.21 is: 1,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.04 : 1,783.60 = 1,265.21 : x
  2. Step 2: Convert to fraction form
    1,299.04/1,783.60 = 1,265.21/x
  3. Step 3: Cross multiply
    1,299.04x = 1,783.60 × 1,265.21
  4. Step 4: Simplify right side
    1,299.04x = 2,256,623.16
  5. Step 5: Solve for x
    x = 2,256,623.16/1,299.04
  6. Step 6: Final answer
    x = 1,737.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.