Home / 2,130.10-2,941.05-1,543.30

Finding the Fourth Proportional to 2,130.10, 2,941.05 and 1,543.30

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Solution

The fourth proportional to 2,130.10, 2,941.05 and 1,543.30 is: 2,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.10 : 2,941.05 = 1,543.30 : x
  2. Step 2: Convert to fraction form
    2,130.10/2,941.05 = 1,543.30/x
  3. Step 3: Cross multiply
    2,130.10x = 2,941.05 × 1,543.30
  4. Step 4: Simplify right side
    2,130.10x = 4,538,922.47
  5. Step 5: Solve for x
    x = 4,538,922.47/2,130.10
  6. Step 6: Final answer
    x = 2,130.85

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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.