Home / 2,145.04-2,960.28-1,213.60

Finding the Fourth Proportional to 2,145.04, 2,960.28 and 1,213.60

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Solution

The fourth proportional to 2,145.04, 2,960.28 and 1,213.60 is: 1,674.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.04 : 2,960.28 = 1,213.60 : x
  2. Step 2: Convert to fraction form
    2,145.04/2,960.28 = 1,213.60/x
  3. Step 3: Cross multiply
    2,145.04x = 2,960.28 × 1,213.60
  4. Step 4: Simplify right side
    2,145.04x = 3,592,595.81
  5. Step 5: Solve for x
    x = 3,592,595.81/2,145.04
  6. Step 6: Final answer
    x = 1,674.84

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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.