Home / 2,152.23-3,225.62-918.40

Finding the Fourth Proportional to 2,152.23, 3,225.62 and 918.40

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Solution

The fourth proportional to 2,152.23, 3,225.62 and 918.40 is: 1,376.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.23 : 3,225.62 = 918.40 : x
  2. Step 2: Convert to fraction form
    2,152.23/3,225.62 = 918.40/x
  3. Step 3: Cross multiply
    2,152.23x = 3,225.62 × 918.40
  4. Step 4: Simplify right side
    2,152.23x = 2,962,409.41
  5. Step 5: Solve for x
    x = 2,962,409.41/2,152.23
  6. Step 6: Final answer
    x = 1,376.44

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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.