Home / 1,491.16-2,056.23-958.99

Finding the Fourth Proportional to 1,491.16, 2,056.23 and 958.99

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Solution

The fourth proportional to 1,491.16, 2,056.23 and 958.99 is: 1,322.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.16 : 2,056.23 = 958.99 : x
  2. Step 2: Convert to fraction form
    1,491.16/2,056.23 = 958.99/x
  3. Step 3: Cross multiply
    1,491.16x = 2,056.23 × 958.99
  4. Step 4: Simplify right side
    1,491.16x = 1,971,898.87
  5. Step 5: Solve for x
    x = 1,971,898.87/1,491.16
  6. Step 6: Final answer
    x = 1,322.39

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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.