Home / 1,543.27-2,130.20-913.77

Finding the Fourth Proportional to 1,543.27, 2,130.20 and 913.77

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Solution

The fourth proportional to 1,543.27, 2,130.20 and 913.77 is: 1,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.27 : 2,130.20 = 913.77 : x
  2. Step 2: Convert to fraction form
    1,543.27/2,130.20 = 913.77/x
  3. Step 3: Cross multiply
    1,543.27x = 2,130.20 × 913.77
  4. Step 4: Simplify right side
    1,543.27x = 1,946,512.85
  5. Step 5: Solve for x
    x = 1,946,512.85/1,543.27
  6. Step 6: Final answer
    x = 1,261.29

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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.