Home / 1,511.40-2,256.05-1,400.10

Finding the Fourth Proportional to 1,511.40, 2,256.05 and 1,400.10

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Solution

The fourth proportional to 1,511.40, 2,256.05 and 1,400.10 is: 2,089.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,511.40 : 2,256.05 = 1,400.10 : x
  2. Step 2: Convert to fraction form
    1,511.40/2,256.05 = 1,400.10/x
  3. Step 3: Cross multiply
    1,511.40x = 2,256.05 × 1,400.10
  4. Step 4: Simplify right side
    1,511.40x = 3,158,688.60
  5. Step 5: Solve for x
    x = 3,158,688.60/1,511.40
  6. Step 6: Final answer
    x = 2,089.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.