Home / 1,515.60-2,263.95-1,489.68

Finding the Fourth Proportional to 1,515.60, 2,263.95 and 1,489.68

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Solution

The fourth proportional to 1,515.60, 2,263.95 and 1,489.68 is: 2,225.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.60 : 2,263.95 = 1,489.68 : x
  2. Step 2: Convert to fraction form
    1,515.60/2,263.95 = 1,489.68/x
  3. Step 3: Cross multiply
    1,515.60x = 2,263.95 × 1,489.68
  4. Step 4: Simplify right side
    1,515.60x = 3,372,561.04
  5. Step 5: Solve for x
    x = 3,372,561.04/1,515.60
  6. Step 6: Final answer
    x = 2,225.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.