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Finding the Fourth Proportional to 1,559.92, 2,153.06 and 897.16

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Solution

The fourth proportional to 1,559.92, 2,153.06 and 897.16 is: 1,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.92 : 2,153.06 = 897.16 : x
  2. Step 2: Convert to fraction form
    1,559.92/2,153.06 = 897.16/x
  3. Step 3: Cross multiply
    1,559.92x = 2,153.06 × 897.16
  4. Step 4: Simplify right side
    1,559.92x = 1,931,628.77
  5. Step 5: Solve for x
    x = 1,931,628.77/1,559.92
  6. Step 6: Final answer
    x = 1,238.29

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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.