Home / 1,526.96-2,291.18-638.12

Finding the Fourth Proportional to 1,526.96, 2,291.18 and 638.12

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Solution

The fourth proportional to 1,526.96, 2,291.18 and 638.12 is: 957.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.96 : 2,291.18 = 638.12 : x
  2. Step 2: Convert to fraction form
    1,526.96/2,291.18 = 638.12/x
  3. Step 3: Cross multiply
    1,526.96x = 2,291.18 × 638.12
  4. Step 4: Simplify right side
    1,526.96x = 1,462,050.32
  5. Step 5: Solve for x
    x = 1,462,050.32/1,526.96
  6. Step 6: Final answer
    x = 957.49

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1.5x scale

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.