Home / 1,534.20-2,117.55-904.77

Finding the Fourth Proportional to 1,534.20, 2,117.55 and 904.77

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Solution

The fourth proportional to 1,534.20, 2,117.55 and 904.77 is: 1,248.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.20 : 2,117.55 = 904.77 : x
  2. Step 2: Convert to fraction form
    1,534.20/2,117.55 = 904.77/x
  3. Step 3: Cross multiply
    1,534.20x = 2,117.55 × 904.77
  4. Step 4: Simplify right side
    1,534.20x = 1,915,895.71
  5. Step 5: Solve for x
    x = 1,915,895.71/1,534.20
  6. Step 6: Final answer
    x = 1,248.79

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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.