Home / 1,140.49-1,572.73-845.25

Finding the Fourth Proportional to 1,140.49, 1,572.73 and 845.25

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Solution

The fourth proportional to 1,140.49, 1,572.73 and 845.25 is: 1,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.49 : 1,572.73 = 845.25 : x
  2. Step 2: Convert to fraction form
    1,140.49/1,572.73 = 845.25/x
  3. Step 3: Cross multiply
    1,140.49x = 1,572.73 × 845.25
  4. Step 4: Simplify right side
    1,140.49x = 1,329,350.03
  5. Step 5: Solve for x
    x = 1,329,350.03/1,140.49
  6. Step 6: Final answer
    x = 1,165.60

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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.