Home / 1,530.90-2,109.51-1,266.30

Finding the Fourth Proportional to 1,530.90, 2,109.51 and 1,266.30

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Solution

The fourth proportional to 1,530.90, 2,109.51 and 1,266.30 is: 1,744.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.90 : 2,109.51 = 1,266.30 : x
  2. Step 2: Convert to fraction form
    1,530.90/2,109.51 = 1,266.30/x
  3. Step 3: Cross multiply
    1,530.90x = 2,109.51 × 1,266.30
  4. Step 4: Simplify right side
    1,530.90x = 2,671,272.51
  5. Step 5: Solve for x
    x = 2,671,272.51/1,530.90
  6. Step 6: Final answer
    x = 1,744.90

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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.