Home / 2,275.60-3,135.44-2,123.20

Finding the Fourth Proportional to 2,275.60, 3,135.44 and 2,123.20

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Solution

The fourth proportional to 2,275.60, 3,135.44 and 2,123.20 is: 2,925.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.60 : 3,135.44 = 2,123.20 : x
  2. Step 2: Convert to fraction form
    2,275.60/3,135.44 = 2,123.20/x
  3. Step 3: Cross multiply
    2,275.60x = 3,135.44 × 2,123.20
  4. Step 4: Simplify right side
    2,275.60x = 6,657,166.21
  5. Step 5: Solve for x
    x = 6,657,166.21/2,275.60
  6. Step 6: Final answer
    x = 2,925.46

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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.