Home / 1,547.21-2,135.44-1,210.44

Finding the Fourth Proportional to 1,547.21, 2,135.44 and 1,210.44

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Solution

The fourth proportional to 1,547.21, 2,135.44 and 1,210.44 is: 1,670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.21 : 2,135.44 = 1,210.44 : x
  2. Step 2: Convert to fraction form
    1,547.21/2,135.44 = 1,210.44/x
  3. Step 3: Cross multiply
    1,547.21x = 2,135.44 × 1,210.44
  4. Step 4: Simplify right side
    1,547.21x = 2,584,819.50
  5. Step 5: Solve for x
    x = 2,584,819.50/1,547.21
  6. Step 6: Final answer
    x = 1,670.64

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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.