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Finding the Fourth Proportional to 1,671.77, 2,307.56 and 964.09

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Solution

The fourth proportional to 1,671.77, 2,307.56 and 964.09 is: 1,330.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671.77 : 2,307.56 = 964.09 : x
  2. Step 2: Convert to fraction form
    1,671.77/2,307.56 = 964.09/x
  3. Step 3: Cross multiply
    1,671.77x = 2,307.56 × 964.09
  4. Step 4: Simplify right side
    1,671.77x = 2,224,695.52
  5. Step 5: Solve for x
    x = 2,224,695.52/1,671.77
  6. Step 6: Final answer
    x = 1,330.74

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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.