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Finding the Fourth Proportional to 1,461.54, 2,015.58 and 964.68

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Solution

The fourth proportional to 1,461.54, 2,015.58 and 964.68 is: 1,330.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.54 : 2,015.58 = 964.68 : x
  2. Step 2: Convert to fraction form
    1,461.54/2,015.58 = 964.68/x
  3. Step 3: Cross multiply
    1,461.54x = 2,015.58 × 964.68
  4. Step 4: Simplify right side
    1,461.54x = 1,944,389.71
  5. Step 5: Solve for x
    x = 1,944,389.71/1,461.54
  6. Step 6: Final answer
    x = 1,330.37

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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.