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Finding the Fourth Proportional to 1,560.48, 2,153.69 and 897.49

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Solution

The fourth proportional to 1,560.48, 2,153.69 and 897.49 is: 1,238.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.48 : 2,153.69 = 897.49 : x
  2. Step 2: Convert to fraction form
    1,560.48/2,153.69 = 897.49/x
  3. Step 3: Cross multiply
    1,560.48x = 2,153.69 × 897.49
  4. Step 4: Simplify right side
    1,560.48x = 1,932,915.24
  5. Step 5: Solve for x
    x = 1,932,915.24/1,560.48
  6. Step 6: Final answer
    x = 1,238.67

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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.