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Finding the Fourth Proportional to 1,762.61, 2,646.51 and 984.13

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Solution

The fourth proportional to 1,762.61, 2,646.51 and 984.13 is: 1,477.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,762.61 : 2,646.51 = 984.13 : x
  2. Step 2: Convert to fraction form
    1,762.61/2,646.51 = 984.13/x
  3. Step 3: Cross multiply
    1,762.61x = 2,646.51 × 984.13
  4. Step 4: Simplify right side
    1,762.61x = 2,604,509.89
  5. Step 5: Solve for x
    x = 2,604,509.89/1,762.61
  6. Step 6: Final answer
    x = 1,477.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.