Home / 2,130.30-2,941.19-1,345.50

Finding the Fourth Proportional to 2,130.30, 2,941.19 and 1,345.50

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Solution

The fourth proportional to 2,130.30, 2,941.19 and 1,345.50 is: 1,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.30 : 2,941.19 = 1,345.50 : x
  2. Step 2: Convert to fraction form
    2,130.30/2,941.19 = 1,345.50/x
  3. Step 3: Cross multiply
    2,130.30x = 2,941.19 × 1,345.50
  4. Step 4: Simplify right side
    2,130.30x = 3,957,371.15
  5. Step 5: Solve for x
    x = 3,957,371.15/2,130.30
  6. Step 6: Final answer
    x = 1,857.66

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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.