Home / 4,123.03-5,689.78-2,421.20

Finding the Fourth Proportional to 4,123.03, 5,689.78 and 2,421.20

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Solution

The fourth proportional to 4,123.03, 5,689.78 and 2,421.20 is: 3,341.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,123.03 : 5,689.78 = 2,421.20 : x
  2. Step 2: Convert to fraction form
    4,123.03/5,689.78 = 2,421.20/x
  3. Step 3: Cross multiply
    4,123.03x = 5,689.78 × 2,421.20
  4. Step 4: Simplify right side
    4,123.03x = 13,776,095.34
  5. Step 5: Solve for x
    x = 13,776,095.34/4,123.03
  6. Step 6: Final answer
    x = 3,341.26

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Half scale
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Double scale
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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.