Home / 1,538.60-2,121.36-1,302.14

Finding the Fourth Proportional to 1,538.60, 2,121.36 and 1,302.14

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Solution

The fourth proportional to 1,538.60, 2,121.36 and 1,302.14 is: 1,795.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.60 : 2,121.36 = 1,302.14 : x
  2. Step 2: Convert to fraction form
    1,538.60/2,121.36 = 1,302.14/x
  3. Step 3: Cross multiply
    1,538.60x = 2,121.36 × 1,302.14
  4. Step 4: Simplify right side
    1,538.60x = 2,762,307.71
  5. Step 5: Solve for x
    x = 2,762,307.71/1,538.60
  6. Step 6: Final answer
    x = 1,795.34

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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.