Home / 1,780.26-2,455.88-1,151.32

Finding the Fourth Proportional to 1,780.26, 2,455.88 and 1,151.32

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Solution

The fourth proportional to 1,780.26, 2,455.88 and 1,151.32 is: 1,588.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.26 : 2,455.88 = 1,151.32 : x
  2. Step 2: Convert to fraction form
    1,780.26/2,455.88 = 1,151.32/x
  3. Step 3: Cross multiply
    1,780.26x = 2,455.88 × 1,151.32
  4. Step 4: Simplify right side
    1,780.26x = 2,827,503.76
  5. Step 5: Solve for x
    x = 2,827,503.76/1,780.26
  6. Step 6: Final answer
    x = 1,588.25

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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.