Home / 2,031.36-2,803.12-1,558.40

Finding the Fourth Proportional to 2,031.36, 2,803.12 and 1,558.40

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Solution

The fourth proportional to 2,031.36, 2,803.12 and 1,558.40 is: 2,150.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.36 : 2,803.12 = 1,558.40 : x
  2. Step 2: Convert to fraction form
    2,031.36/2,803.12 = 1,558.40/x
  3. Step 3: Cross multiply
    2,031.36x = 2,803.12 × 1,558.40
  4. Step 4: Simplify right side
    2,031.36x = 4,368,382.21
  5. Step 5: Solve for x
    x = 4,368,382.21/2,031.36
  6. Step 6: Final answer
    x = 2,150.47

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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.