Home / 1,488.04-2,051.20-1,225.60

Finding the Fourth Proportional to 1,488.04, 2,051.20 and 1,225.60

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Solution

The fourth proportional to 1,488.04, 2,051.20 and 1,225.60 is: 1,689.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.04 : 2,051.20 = 1,225.60 : x
  2. Step 2: Convert to fraction form
    1,488.04/2,051.20 = 1,225.60/x
  3. Step 3: Cross multiply
    1,488.04x = 2,051.20 × 1,225.60
  4. Step 4: Simplify right side
    1,488.04x = 2,513,950.72
  5. Step 5: Solve for x
    x = 2,513,950.72/1,488.04
  6. Step 6: Final answer
    x = 1,689.44

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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.