Home / 1,561.85-2,152.65-1,141.55

Finding the Fourth Proportional to 1,561.85, 2,152.65 and 1,141.55

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Solution

The fourth proportional to 1,561.85, 2,152.65 and 1,141.55 is: 1,573.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.85 : 2,152.65 = 1,141.55 : x
  2. Step 2: Convert to fraction form
    1,561.85/2,152.65 = 1,141.55/x
  3. Step 3: Cross multiply
    1,561.85x = 2,152.65 × 1,141.55
  4. Step 4: Simplify right side
    1,561.85x = 2,457,357.61
  5. Step 5: Solve for x
    x = 2,457,357.61/1,561.85
  6. Step 6: Final answer
    x = 1,573.36

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Half scale
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Double scale
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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.