Home / 1,560.22-2,153.10-897.20

Finding the Fourth Proportional to 1,560.22, 2,153.10 and 897.20

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Solution

The fourth proportional to 1,560.22, 2,153.10 and 897.20 is: 1,238.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.22 : 2,153.10 = 897.20 : x
  2. Step 2: Convert to fraction form
    1,560.22/2,153.10 = 897.20/x
  3. Step 3: Cross multiply
    1,560.22x = 2,153.10 × 897.20
  4. Step 4: Simplify right side
    1,560.22x = 1,931,761.32
  5. Step 5: Solve for x
    x = 1,931,761.32/1,560.22
  6. Step 6: Final answer
    x = 1,238.14

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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.