Home / 1,561.46-2,153.57-1,119.20

Finding the Fourth Proportional to 1,561.46, 2,153.57 and 1,119.20

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Solution

The fourth proportional to 1,561.46, 2,153.57 and 1,119.20 is: 1,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.46 : 2,153.57 = 1,119.20 : x
  2. Step 2: Convert to fraction form
    1,561.46/2,153.57 = 1,119.20/x
  3. Step 3: Cross multiply
    1,561.46x = 2,153.57 × 1,119.20
  4. Step 4: Simplify right side
    1,561.46x = 2,410,259.18
  5. Step 5: Solve for x
    x = 2,410,259.18/1,561.46
  6. Step 6: Final answer
    x = 1,543.60

Related Problems

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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.