Home / 1,560.21-2,153.17-897.12

Finding the Fourth Proportional to 1,560.21, 2,153.17 and 897.12

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Solution

The fourth proportional to 1,560.21, 2,153.17 and 897.12 is: 1,238.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.21 : 2,153.17 = 897.12 : x
  2. Step 2: Convert to fraction form
    1,560.21/2,153.17 = 897.12/x
  3. Step 3: Cross multiply
    1,560.21x = 2,153.17 × 897.12
  4. Step 4: Simplify right side
    1,560.21x = 1,931,647.95
  5. Step 5: Solve for x
    x = 1,931,647.95/1,560.21
  6. Step 6: Final answer
    x = 1,238.07

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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.