Home / 1,490.08-2,056.16-869.44

Finding the Fourth Proportional to 1,490.08, 2,056.16 and 869.44

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Solution

The fourth proportional to 1,490.08, 2,056.16 and 869.44 is: 1,199.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.08 : 2,056.16 = 869.44 : x
  2. Step 2: Convert to fraction form
    1,490.08/2,056.16 = 869.44/x
  3. Step 3: Cross multiply
    1,490.08x = 2,056.16 × 869.44
  4. Step 4: Simplify right side
    1,490.08x = 1,787,707.75
  5. Step 5: Solve for x
    x = 1,787,707.75/1,490.08
  6. Step 6: Final answer
    x = 1,199.74

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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.