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Finding the Fourth Proportional to 1,710.76, 2,360.90 and 964.75

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Solution

The fourth proportional to 1,710.76, 2,360.90 and 964.75 is: 1,331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,710.76 : 2,360.90 = 964.75 : x
  2. Step 2: Convert to fraction form
    1,710.76/2,360.90 = 964.75/x
  3. Step 3: Cross multiply
    1,710.76x = 2,360.90 × 964.75
  4. Step 4: Simplify right side
    1,710.76x = 2,277,661.65
  5. Step 5: Solve for x
    x = 2,277,661.65/1,710.76
  6. Step 6: Final answer
    x = 1,331.37

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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.