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Finding the Fourth Proportional to 1,762.40, 2,430.43 and 1,054.13

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Solution

The fourth proportional to 1,762.40, 2,430.43 and 1,054.13 is: 1,453.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.40 : 2,430.43 = 1,054.13 : x
  2. Step 2: Convert to fraction form
    1,762.40/2,430.43 = 1,054.13/x
  3. Step 3: Cross multiply
    1,762.40x = 2,430.43 × 1,054.13
  4. Step 4: Simplify right side
    1,762.40x = 2,561,987.15
  5. Step 5: Solve for x
    x = 2,561,987.15/1,762.40
  6. Step 6: Final answer
    x = 1,453.69

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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.