Home / 1,525.30-2,288.43-909.70

Finding the Fourth Proportional to 1,525.30, 2,288.43 and 909.70

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Solution

The fourth proportional to 1,525.30, 2,288.43 and 909.70 is: 1,364.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.30 : 2,288.43 = 909.70 : x
  2. Step 2: Convert to fraction form
    1,525.30/2,288.43 = 909.70/x
  3. Step 3: Cross multiply
    1,525.30x = 2,288.43 × 909.70
  4. Step 4: Simplify right side
    1,525.30x = 2,081,784.77
  5. Step 5: Solve for x
    x = 2,081,784.77/1,525.30
  6. Step 6: Final answer
    x = 1,364.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.