Home / 1,507.30-2,079.21-1,087.18

Finding the Fourth Proportional to 1,507.30, 2,079.21 and 1,087.18

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Solution

The fourth proportional to 1,507.30, 2,079.21 and 1,087.18 is: 1,499.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.30 : 2,079.21 = 1,087.18 : x
  2. Step 2: Convert to fraction form
    1,507.30/2,079.21 = 1,087.18/x
  3. Step 3: Cross multiply
    1,507.30x = 2,079.21 × 1,087.18
  4. Step 4: Simplify right side
    1,507.30x = 2,260,475.53
  5. Step 5: Solve for x
    x = 2,260,475.53/1,507.30
  6. Step 6: Final answer
    x = 1,499.69

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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.