Home / 1,588.32-2,191.14-999.18

Finding the Fourth Proportional to 1,588.32, 2,191.14 and 999.18

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Solution

The fourth proportional to 1,588.32, 2,191.14 and 999.18 is: 1,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.32 : 2,191.14 = 999.18 : x
  2. Step 2: Convert to fraction form
    1,588.32/2,191.14 = 999.18/x
  3. Step 3: Cross multiply
    1,588.32x = 2,191.14 × 999.18
  4. Step 4: Simplify right side
    1,588.32x = 2,189,343.27
  5. Step 5: Solve for x
    x = 2,189,343.27/1,588.32
  6. Step 6: Final answer
    x = 1,378.40

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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.