Home / 2,931.88-4,047.03-1,813.68

Finding the Fourth Proportional to 2,931.88, 4,047.03 and 1,813.68

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Solution

The fourth proportional to 2,931.88, 4,047.03 and 1,813.68 is: 2,503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.88 : 4,047.03 = 1,813.68 : x
  2. Step 2: Convert to fraction form
    2,931.88/4,047.03 = 1,813.68/x
  3. Step 3: Cross multiply
    2,931.88x = 4,047.03 × 1,813.68
  4. Step 4: Simplify right side
    2,931.88x = 7,340,017.37
  5. Step 5: Solve for x
    x = 7,340,017.37/2,931.88
  6. Step 6: Final answer
    x = 2,503.52

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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.